Bump cryptography from 1.7 to 3.2
diff --git a/requirements_dev.txt b/requirements_dev.txt
index ff7da8df9..f39b3d2a2 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8
 tox==2.3.1
 coverage==4.1
 Sphinx==1.4.8
-cryptography==1.7
+cryptography==3.2
 pyyaml>=4.2b1
 face_recognition_models
 Click>=6.0

Bumps [cryptography](https://github.com/pyca/cryptography) from 1.7 to 3.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst">cryptography's changelog</a>.</em></p>
<blockquote>
<p>3.2 - 2020-10-25</p>
<pre><code>
* **SECURITY ISSUE:** Attempted to make RSA PKCS#1v1.5 decryption more constant
  time, to protect against Bleichenbacher vulnerabilities. Due to limitations
  imposed by our API, we cannot completely mitigate this vulnerability and a
  future release will contain a new API which is designed to be resilient to
  these for contexts where it is required. Credit to **Hubert Kario** for
  reporting the issue. *CVE-2020-25659*
* Support for OpenSSL 1.0.2 has been removed. Users on older version of OpenSSL
  will need to upgrade.
* Added basic support for PKCS7 signing (including SMIME) via
  :class:`~cryptography.hazmat.primitives.serialization.pkcs7.PKCS7SignatureBuilder`.
<p>.. _v3-1-1:</p>
<p>3.1.1 - 2020-09-22
</code></pre></p>
<ul>
<li>Updated Windows, macOS, and <code>manylinux</code> wheels to be compiled with
OpenSSL 1.1.1h.</li>
</ul>
<p>.. _v3-1:</p>
<p>3.1 - 2020-08-26</p>
<pre><code>
* **BACKWARDS INCOMPATIBLE:** Removed support for ``idna`` based
  :term:`U-label` parsing in various X.509 classes. This support was originally
  deprecated in version 2.1 and moved to an extra in 2.5.
* Deprecated OpenSSL 1.0.2 support. OpenSSL 1.0.2 is no longer supported by
  the OpenSSL project. The next version of ``cryptography`` will drop support
  for it.
* Deprecated support for Python 3.5. This version sees very little use and will
  be removed in the next release.
* ``backend`` arguments to functions are no longer required and the
  default backend will automatically be selected if no ``backend`` is provided.
* Added initial support for parsing certificates from PKCS7 files with
  :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_pem_pkcs7_certificates`
  and
  :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_der_pkcs7_certificates`
  .
* Calling ``update`` or ``update_into`` on
  :class:`~cryptography.hazmat.primitives.ciphers.CipherContext` with ``data``
  longer than 2\ :sup:`31` bytes no longer raises an ``OverflowError``. This
  also resolves the same issue in :doc:`/fernet`.
<p>.. _v3-0:</p>
<p>3.0 - 2020-07-20
&lt;/tr&gt;&lt;/table&gt;
</code></pre></p>
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pyca/cryptography/commit/c9e65222c91df8b6f61650a3460e30232962c1e0"><code>c9e6522</code></a> 3.2 release (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5508">#5508</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494"><code>58494b4</code></a> Attempt to mitigate Bleichenbacher attacks on RSA decryption (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5507">#5507</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/cf9bd6a36bc7b05abca114b76e216598d9ad9b16"><code>cf9bd6a</code></a> move blinding to <strong>init</strong> on both RSA public and private (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5506">#5506</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/bf4b962f4b92a1633835b2d17974f18de2d61620"><code>bf4b962</code></a> be more verbose in the 102 deprecation notice (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5505">#5505</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/ada53e7ca0f04a33711c330a130d34376e5ecc2b"><code>ada53e7</code></a> make the regexes for branches more strict (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5504">#5504</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/8be1d4b1113eabea306dd60ab64e7f00815d6a52"><code>8be1d4b</code></a> Stop using <a href="https://github.com/master">@master</a> for GH actions (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5503">#5503</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/08a97cca715ca0842d6792d0079e351efbb48ec9"><code>08a97cc</code></a> Bump actions/upload-artifact from v1 to v2.2.0 (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5502">#5502</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/52a0e44e97dd6e150509b14c9b1f76a261f12786"><code>52a0e44</code></a> Add a dependabot configuration to bump our github actions (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5501">#5501</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/611c4a340f6c53a7e28a9695a3248bd4e9f8558d"><code>611c4a3</code></a> PKCS7SignatureBuilder now supports new option NoCerts when signing (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5500">#5500</a>)</li>
<li><a href="https://github.com/pyca/cryptography/commit/836a92a28fbe9df8c37121e340b91ed9cd519ddd"><code>836a92a</code></a> chunking didn't actually work (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5499">#5499</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/pyca/cryptography/compare/1.7...3.2">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=cryptography&package-manager=pip&previous-version=1.7&new-version=3.2)](https://docs.github.com/en/github/managing-security-vulnerabilities/configuring-github-dependabot-security-updates)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
- `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language
- `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language
- `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language
- `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language

You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/ageitgey/face_recognition/network/alerts).

</details>