ci: Fix Codecov uploads with explicit file paths

- Add files: coverage.xml to codecov-action
- Add files: junit.xml to test-results-action
- Add fail_ci_if_error and verbose flags for coverage upload

Author: github-actions

.github/workflows/tests.yml

@@ -66,9 +66,13 @@ jobs:
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          files: coverage.xml
+          fail_ci_if_error: true
+          verbose: true
 
       - name: Upload test results to Codecov
         if: ${{ !cancelled() }}
         uses: codecov/test-results-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          files: junit.xml