Bump actions/checkout from 1 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 1 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...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/pr_validation.yml

@@ -31,7 +31,7 @@ jobs:
     name: windows-latest
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Make build.sh executable
         run: chmod +x ./build.sh
       - name: Make build.cmd executable
@@ -57,7 +57,7 @@ jobs:
     name: ubuntu-latest
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Make build.sh executable
         run: chmod +x ./build.sh
       - name: Make build.cmd executable