ci: give each test project a unique TRX filename so all tests appear in report

Author: Mark Kharitonov

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Test
         run: >
           dotnet test --no-build --configuration Release
-          --logger "trx;LogFileName=test-results.trx"
+          --logger trx
           --results-directory ./test-results
 
       - name: Upload test results