⬆️ Bump actions/checkout from 5 to 6 (#117)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -22,7 +22,7 @@ jobs:
       url: https://hub.docker.com/r/${{ vars.DOCKERHUB_REPOSITORY }}
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/docs.yml

@@ -16,7 +16,7 @@ jobs:
     name: "Docs"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.x"

.github/workflows/publish.yml

@@ -29,7 +29,7 @@ jobs:
       group: publish-${{ github.ref }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Compare package version with ref/tag
         id: compare
         run: |

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
     name: "Analyze"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
@@ -453,7 +453,7 @@ jobs:
           --health-timeout=5s
           --health-retries=30
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.py }}
         uses: actions/setup-python@v6
         with: