Updated project's threshold for code coverage in codecov.yml to compensate for the lower code coverage in LWC tests for now

Eventually, code coverage for LWC will be increased - but for now, the constant alerts from codecov.io aren't particularly helpful ^_^

Author: jongpie

.github/codecov.yml

@@ -3,7 +3,7 @@ coverage:
     project:
       default:
         target: 90%
-        threshold: 2%
+        threshold: 5%
         if_ci_failed: success
       Apex:
         target: 90%