Revert "chore: Set permissions for GitHub actions (#6096)" (#6108)

This reverts commit 35ebd1e.

Author: adam3smith

.github/workflows/sheldon.yaml

@@ -4,14 +4,8 @@ on:
   pull_request_target:
     types: [ opened, synchronize, workflow_dispatch]
 
-permissions:
-  contents: read
-
 jobs:
   test:
-    permissions:
-      contents: write  # for stefanzweifel/git-auto-commit-action to push code in repo
-      pull-requests: read  # for dorny/paths-filter to read pull requests
     runs-on: ubuntu-latest
     env:
       GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"