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](https://github.com/actions/setup-dotnet/compare/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>

.github/workflows/ci.yml

@@ -73,7 +73,7 @@ jobs:
         run: |
           bash tools/ci/setup_od.sh
       - name: Setup .NET SDK
-        uses: actions/setup-dotnet@v5.4.0
+        uses: actions/setup-dotnet@v6.0.0
         with:
           dotnet-version: 9.x
       - name: Run OD