Bump actions/checkout from 4 to 5 (#74)

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](https://github.com/actions/checkout/compare/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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Gibbs <me@danielgibbs.co.uk>

.github/workflows/docker-publish.yml

@@ -19,7 +19,7 @@ jobs:
         id-token: write
       steps:
         - name: Checkout
-          uses: actions/checkout@v4
+          uses: actions/checkout@v5
 
         - name: Setup QEMU
           uses: docker/setup-qemu-action@v3
@@ -69,7 +69,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v3
@@ -117,7 +117,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v3