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/cloudflare-worker.yml

@@ -13,7 +13,7 @@ jobs:
     outputs:
       workers: ${{ steps.get-workers.outputs.workers }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Get workers
         id: get-workers
         run: |
@@ -34,7 +34,7 @@ jobs:
               NETLIFY_GH_TOKEN
               NETLIFY_JWS_SECRET
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Deploy Cloudflare Worker (${{ matrix.worker }})
         uses: cloudflare/wrangler-action@v3
         with: