Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/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
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/pages.yml

@@ -11,7 +11,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Install the latest version of uv and set the python version
       uses: astral-sh/setup-uv@v7
       with:

.github/workflows/pytest.yml

@@ -13,7 +13,7 @@ jobs:
     env:
       PYTHON: ${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install the latest version of uv and set the python version
         uses: astral-sh/setup-uv@v7
         with:

.github/workflows/python-publish.yml

@@ -24,7 +24,7 @@ jobs:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: astral-sh/setup-uv@v7
     - name: Build package
       run: |