Bump actions/checkout from 4.1.1 to 4.1.5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.1 to 4.1.5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.1...v4.1.5)

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

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

.github/workflows/NUnit3TestAdapter.CI.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: windows-latest
 
     steps:
-    - uses: actions/checkout@v4.1.1
+    - uses: actions/checkout@v4.1.5
     - uses: actions/setup-dotnet@v4
       with:
         dotnet-version: |