⬆️(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-test.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
     # https://github.com/actions/checkout#usage
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         # A fetch-depth of 0 includes all history and tags for script/version
         fetch-depth: 0

.github/workflows/danger.yml

@@ -7,7 +7,7 @@ jobs:
     name: Danger
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Danger
       # https://github.com/orgs/danger/packages/container/package/danger-swift
       uses: docker://ghcr.io/danger/danger-swift:3.12.3