refactor: simplify ruff GitHub Actions workflow

- Use args to customize ruff check with --output-format=github
- Add --diff to format check for better error output
- Remove duplicate ruff check invocation

Author: xz-dev

.github/workflows/lint.yml

@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: astral-sh/ruff-action@v3
       - uses: astral-sh/ruff-action@v3
         with:
-          args: format --check
+          args: check --output-format=github
+      - run: ruff format --check --diff
 
   mypy:
     runs-on: ubuntu-latest