Fix GitHub Actions permissions for lua-format workflow

Author: Mckay666

.github/workflows/lua-format.yml

@@ -11,6 +11,9 @@ on:
 jobs:
   lua-formatter:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
     steps:
       - name: Set up Git
         if: ${{ github.ref != 'refs/heads/main' }}
@@ -21,9 +24,10 @@ jobs:
         if: ${{ github.ref != 'refs/heads/main' }}
         uses: actions/checkout@v3
         with:
-          repository: ${{ github.event.pull_request.head.repo.full_name }}
-          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name || github.repository }}
+          ref: ${{ github.event.pull_request.head.ref || github.ref }}
           token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
 
       - uses: JohnnyMorganz/stylua-action@v3
         with:
@@ -32,7 +36,7 @@ jobs:
           args: .
 
       - name: Run add and commit
-        if: ${{ github.ref != 'refs/heads/main' }}
+        if: ${{ github.ref != 'refs/heads/main' && github.event_name == 'pull_request' }}
         uses: EndBug/add-and-commit@v9
         with:
           author_name: GitHub Actions