Updated codecov.yml to wait for both Apex & LWC test results to be uploaded before checking code coverage

Author: jongpie

.github/codecov.yml

@@ -5,6 +5,9 @@ coverage:
         target: 90%
         threshold: 2%
         if_ci_failed: success
+        # The pipeline runs Apex and LWC tests as separate steps,
+        # so we need to wait for both to be uploaded before checking code coverage.
+        after_n_builds: 2
       Apex:
         target: 90%
         flags: