ci(deps): 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](https://github.com/actions/checkout/compare/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>

.github/workflows/image.yml

@@ -53,7 +53,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3

.github/workflows/pages-cf.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout pages branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: pages
 

.github/workflows/pages-eo.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout pages branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: pages
 

.github/workflows/sync.yml

@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout main branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: main
           fetch-depth: 0

.github/workflows/workers.yml

@@ -30,7 +30,7 @@ jobs:
       deployments: write
     steps:
       - name: Checkout main branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Deploy to Cloudflare Workers
         uses: cloudflare/wrangler-action@v3