ci: Report formatting issues in github checks

Signed-off-by: Nils Wistoff <[email protected]>

.github/workflows/verible.yml

@@ -16,8 +16,9 @@ jobs:
       - uses: actions/checkout@v3
         with:
           ref: ${{ github.event.pull_request.head.sha }}
-      - uses: chipsalliance/verible-formatter-action@main
+      - uses: niwis/verible-formatter-action@pulp
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           files: 'core/**/*.{v,sv}'
           fail_on_formatting_suggestions: true
+          reviewdog_reporter: github-check