chore(deps): bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [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/v3...v4)

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

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

.github/workflows/build.yml

@@ -51,7 +51,7 @@ jobs:
     steps:
       # Checkout push-to-registry action GitHub repository
       - name: Checkout Push to Registry action
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Matrix Variables
         run: |

.github/workflows/release-please.yml

@@ -35,7 +35,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Generate ISO
         uses: ublue-os/isogenerator@v2.1.2
         id: isogenerator