ci: skip CI for autofix commits

The auto-fix workflow pushes a 'style: auto-fix lint and format' commit
after every user push, which triggers a new CI run that cancels the
in-progress run (concurrency cancel-in-progress) before the container
job can finish and publish the PR preview image. Mark the autofix commit
with [skip ci] so it does not restart CI, letting the user's run
complete and publish the image.

.github/workflows/autofix.yml

@@ -44,4 +44,4 @@ jobs:
       - name: Commit fixes
         uses: stefanzweifel/git-auto-commit-action@v7
         with:
-          commit_message: "style: auto-fix lint and format"
+          commit_message: "style: auto-fix lint and format [skip ci]"