use printf to avoid commit messages containing `` from running commands on the actions runner

.gitea/workflows/actions.yaml

@@ -129,7 +129,8 @@ jobs:
         id: check_commit_message
         run: |
           COMMIT_MESSAGE="${{ steps.extract_commit_message.outputs.message }}"
-          OUTPUT="$(python .gitea/workflows/scripts/message.py "$COMMIT_MESSAGE")"
+          ESCAPED_COMMIT_MESSAGE="$(printf '%q' "$COMMIT_MESSAGE")"
+          OUTPUT="$(python .forgejo/workflows/scripts/message.py '$ESCAPED_COMMIT_MESSAGE')"
           if [ "$OUTPUT" = "Usage: python message.py <commit_message>" ]; then
             echo "Called without commit message!"
             exit 1