Disable stale for PRs
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index fe9b55ec99b..d8e227c77b9 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -17,9 +17,15 @@ jobs:
           # Idle number of days before marking issues stale
           days-before-issue-stale: 365
 
+          # Never mark PRs as stale
+          days-before-pr-stale: -1
+
           # Idle number of days before closing stale issues
           days-before-issue-close: 30
 
+          # Never close PRs
+          days-before-pr-close: -1
+
           # Ignore issues with an assignee
           exempt-all-issue-assignees: true
 

I noticed our stale action is processing PRs. See https://github.com/certbot/certbot/actions/runs/4169673316/jobs/7217894512#step:2:1225 for example. I believe we only wanted to mark issues as stale.

It's not very clear in the documentation, but I think setting these values to -1 should stop it wanting to modify PRs. See https://github.com/actions/stale#days-before-stale and https://github.com/actions/stale#days-before-close.

Updating PRs may have quietly failed since we didn't give the action permissions for PRs, but this hopefully should stop it from ever trying.