Bump actions/checkout from 4 to 5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docker-image.yml

@@ -19,7 +19,7 @@ jobs:
         run: echo "::set-output name=timestamp::$(date +%s)"
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - # Add support for more platforms with QEMU (optional)
         # https://github.com/docker/setup-qemu-action

.github/workflows/docker-publish-on-tag.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - # Add support for more platforms with QEMU (optional)
         # https://github.com/marketplace/actions/docker-setup-qemu
@@ -94,7 +94,7 @@ jobs:
     needs: [ docker-publish ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       # https://github.com/actions/create-release
       - name: Create GitHub Release