Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/checks.yaml

@@ -28,7 +28,7 @@ jobs:
       pre-commit-key: ${{ steps.generate-pre-commit-key.outputs.key }}
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
         uses: actions/setup-python@v5
@@ -71,7 +71,7 @@ jobs:
     needs: prepare-base
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
         uses: actions/setup-python@v5

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       url: https://pypi.org/project/pylint-pytest/
     steps:
       - name: Check out code from Github
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
         uses: actions/setup-python@v5

.github/workflows/tests.yaml

@@ -31,7 +31,7 @@ jobs:
         shell: ${{ matrix.os == 'windows-latest' && 'pwsh' || '/bin/bash --noprofile --norc -Eeuxo pipefail {0}' }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Slugify GITHUB_REPOSITORY (win)
         if: ${{ matrix.os == 'windows-latest' }}