Stop saving GitHub cache on pull requests

[pquentin]

We should only save on pushes to main and other branches, and restore only in pull requests. Currently, pull request runs pollute the cache.

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

No changes detected.

You can validate these APIs yourself by using the make validate target.

[github-actions]

The backport to 9.1 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-9.1 9.1
# Navigate to the new working tree
cd .worktrees/backport-9.1
# Create a new branch
git switch --create backport-5489-to-9.1
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 bbf7ad2c06b6fcfd5aa1b51c6951d4716d392044
# Push it to GitHub
git push --set-upstream origin backport-5489-to-9.1
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.1

Then, create a pull request where the base branch is 9.1 and the compare/head branch is backport-5489-to-9.1.

[pquentin]

💚 All backports created successfully

Status	Branch	Result
✅	9.1

Questions ?

Please refer to the Backport tool documentation