Adjust GHA workflows

Author: asfernandes

.github/workflows/main.yml

@@ -311,7 +311,8 @@ jobs:
 
       - name: Run tests
         run: |
-          ctest --preset default --output-on-failure -j8
+          # Parallel test execution on macOS often causes failures in EventListener tests
+          ctest --preset default --output-on-failure
 
   deploy-docs:
     if: github.repository == 'asfernandes/fb-cpp' && github.ref == 'refs/heads/main'

.github/workflows/pull-request.yml

@@ -304,4 +304,5 @@ jobs:
 
       - name: Run tests
         run: |
-          ctest --preset default --output-on-failure -j8
+          # Parallel test execution on macOS often causes failures in EventListener tests
+          ctest --preset default --output-on-failure