build(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](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -45,7 +45,7 @@ jobs:
  steps:
  # Checkout push-to-registry action GitHub repository
  - name: Checkout Push to Registry action
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
 
  - name: Add yq (for reading recipe.yml)
  uses: mikefarah/[email protected]

.github/workflows/release-iso.yml

@@ -16,7 +16,7 @@ jobs:
  image: fedora:38
  options: --privileged
  steps:
- - uses: actions/checkout@v3
+ - uses: actions/checkout@v4
  - name: Generate ISO 
  uses: ublue-os/isogenerator@main
  id: isogenerator