fix(ci/test): correct codecov-action configuration for coverage and test results

Explicitly set report types and switch to the unified codecov-action@v5 for test results. This ensures that both coverage and test result reports are correctly identified and processed by Codecov, resolving issues where reports might have been misclassified or failed to upload using the previous standalone action.

Author: liblaf

template/.github/workflows/test.yaml

@@ -71,11 +71,13 @@ jobs:
         name: Upload Coverage
         uses: codecov/codecov-action@v5
         with:
+          report_type: coverage
           use_oidc: true
       - if: success() || failure()
         name: Upload Test Results
-        uses: codecov/test-results-action@v1
+        uses: codecov/codecov-action@v5
         with:
+          report_type: test_results
           use_oidc: true
     strategy:
       matrix: