Bump actions/checkout from 2.7.0 to 4.1.1

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.7.0 to 4.1.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](https://github.com/actions/checkout/compare/v2.7.0...v4.1.1)

---
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/pr-validation.yml

@@ -18,7 +18,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - uses: azure/login@v1
         name: Sign in to Azure
         with: