chore: 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)
- [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] <[email protected]>

Author: dependabot[bot]

.github/workflows/build-publish-mcr.yml

@@ -26,7 +26,7 @@ jobs:
       fleet_networking_version: ${{ steps.vars.outputs.fleet_networking_version }}
       arc_helmchart_version: ${{ steps.vars.outputs.arc_helmchart_version }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - name: 'Set output variables'
@@ -59,7 +59,7 @@ jobs:
       labels: [self-hosted, "1ES.Pool=1es-aks-fleet-pool-ubuntu"]
     needs: prepare-variables
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: ${{ needs.prepare-variables.outputs.release_tag }}
       - name: 'Login the ACR'
@@ -112,7 +112,7 @@ jobs:
       labels: [self-hosted, "1ES.Pool=1es-aks-fleet-pool-ubuntu-arm64"]
     needs: prepare-variables
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: ${{ needs.prepare-variables.outputs.release_tag }}
       - name: 'Login the ACR'

.github/workflows/publish-image.yml

@@ -37,7 +37,7 @@ jobs:
       REGISTRY: ${{ needs.export-registry.outputs.registry }}
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           submodules: true
           fetch-depth: 0