chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/pre-commit.yml

@@ -13,7 +13,7 @@ jobs:
       # added or changed files to the repository.
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
       - name: Install pre-commit
         run: pip install pre-commit