build(deps): Bump actions/upload-artifact from 5.0.0 to 6.0.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5.0.0...v6.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -63,7 +63,7 @@ jobs:
         toolpath: "reportgeneratortool" # Default directory for installing the dotnet tool.
 
     - name: "Upload Combined Coverage"
-      uses: actions/upload-artifact@v5.0.0
+      uses: actions/upload-artifact@v6.0.0
       with:
         name: 'Coverage'
         path: ${{ github.workspace }}/Cobertura.xml
@@ -92,7 +92,7 @@ jobs:
         path: code-coverage-results.md
 
     - name: "Upload Test Results"
-      uses: actions/upload-artifact@v5.0.0
+      uses: actions/upload-artifact@v6.0.0
       with:
         name: 'TestResults'
         path: ${{ github.workspace }}/${{ env.COVERAGE_REPORT_DIRECTORY }}/**/*