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] <[email protected]>

Author: dependabot[bot]

.github/workflows/build-container.yml

@@ -23,7 +23,7 @@ jobs:
           app-id: ${{ secrets.APP_ID }}
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
           owner: metacpan
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           token: ${{ steps.app-token.outputs.token }}
       - name: Docker build test

.github/workflows/codeql-analysis.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # We must fetch at least the immediate parents so that if this is
           # a pull request then we can checkout the head.

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-24.04
     name: Code Formatting
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Fetch base ref
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-24.04
     name: playwright test
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Build test image
         id: docker-build-test
         uses: docker/build-push-action@v6
@@ -109,7 +109,7 @@ jobs:
           matrix.resolver == 'snapshot'
           && github.event.pull_request.user.login != 'dependabot[bot]'
         run: echo "enabled=1" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: '22'

.github/workflows/update-snapshot.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: haarg/setup-git-user@v1
         with:
           app: ${{ steps.app-token.outputs.app-slug }}
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           token: ${{ steps.app-token.outputs.token }}
       - uses: metacpan/metacpan-actions/update-snapshot@master