build(deps): bump actions/setup-dotnet from 5.4.0 to 6.0.0

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5.4.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v5.4.0...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/validatePullRequest.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Setup .NET
-        uses: actions/setup-dotnet@v5.4.0
+        uses: actions/setup-dotnet@v6.0.0
         with:
           dotnet-version: |
             8.x
@@ -61,7 +61,7 @@ jobs:
       with:
         languages: ${{ matrix.language }}
     - name: Setup .NET
-      uses: actions/setup-dotnet@v5.4.0
+      uses: actions/setup-dotnet@v6.0.0
       with:
         dotnet-version: |
           8.x