fix: Remove extra arguments to checkout in favor of the GitHub defaults (#5883)

## Summary

Should allow this action to run on fork PRs.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5883-fix-Remove-extra-arguments-to-checkout-in-favor-of-the-GitHub-defaults-27f6d73d365081a780f7cf4a5a62c368)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <[email protected]>

Author: 2 people

.github/workflows/lint-and-format.yaml

@@ -15,9 +15,7 @@ jobs:
       - name: Checkout PR
         uses: actions/checkout@v5
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          ref: ${{ github.event.pull_request.head.ref }}
-          fetch-depth: 0
+          ref: ${{ github.head_ref }}
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4