fix: change macos image

Author: phmonte

.github/workflows/test-report.yml

@@ -9,12 +9,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        os: [windows-latest, ubuntu-latest, macos-latest]
+        os: [windows-latest, ubuntu-latest, macos-12]
     steps:
       - name: Process Test Results
         uses: dorny/test-reporter@v1
         with:
           artifact: test-results-${{ matrix.os }}
           name: 'Test Results (${{ matrix.os }})'
           path: '**/*.trx'
-          reporter: dotnet-trx
+          reporter: dotnet-trx