Bump actions/checkout from 5 to 6 in the actions group (#123)

Bumps the actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pre-commit.yml

@@ -9,7 +9,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: actions/setup-python@v6

.github/workflows/update-lint-and-build.yml

@@ -28,7 +28,7 @@ jobs:
           pip install requests cogapp polib transifex-python sphinx-intl blurb six
           curl -o- https://raw.githubusercontent.com/transifex/cli/master/install.sh | bash
         working-directory: /usr/local/bin
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ matrix.version }}
           fetch-depth: 0
@@ -78,7 +78,7 @@ jobs:
         with:
           python-version: 3
       - run: pip install sphinx-lint
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ matrix.version }}
       - uses: rffontenelle/sphinx-lint-problem-matcher@v1.0.0
@@ -96,13 +96,13 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: 3.12  # pin for Sphinx 3.4.3 in 3.10 branch (see #63)
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           repository: python/cpython
           ref: ${{ matrix.version }}
       - run: make venv
         working-directory: ./Doc
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ matrix.version }}
           path: Doc/locales/pl/LC_MESSAGES