added run coverage step

Author: connorhu

.github/workflows/tests.yml

@@ -66,6 +66,9 @@ jobs:
            composer remove --dev doctrine/annotations
       - name: Run test suite
         run: composer test:unit
+      - name: Run code coverage
+        run: vendor/bin/simple-phpunit --colors=always --coverage-clover coverage.xml
+        if: ${{ matrix.php-version == '8.3' && startsWith(matrix.orm, '7.0') }}
 
   code-style:
     runs-on: ubuntu-latest