Bump actions/checkout from 5 to 6 in the actions-deps group (#570)

Bumps the actions-deps 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-deps
...

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/ci.yml

@@ -31,7 +31,7 @@ jobs:
   ruff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: chartboost/ruff-action@v1
         with:
           version: ${{ env.RUFF_VERSION }}
@@ -45,7 +45,7 @@ jobs:
     needs: [ruff]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up Python"
         uses: actions/setup-python@v6
         with:
@@ -70,7 +70,7 @@ jobs:
     env:
       PYTHON: ${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up Python"
         uses: actions/setup-python@v6
         with:
@@ -99,7 +99,7 @@ jobs:
     permissions:
       id-token: write # used for trusted publishing
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up Python"
         uses: actions/setup-python@v6
         with:

.github/workflows/deploy-docs.yml

@@ -16,7 +16,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: 22