Fix mochawesome-merge command after breaking change in v4.0.0 (#345)

* Fix mochawesome-merge command after breaking change in v4.0.0

* Attempt to fix artifacts problem

* Revert "Attempt to fix artifacts problem"

This reverts commit 4c152ce.

Author: patleeman

amplify.yml

@@ -33,4 +33,4 @@ test:
         - 'npx cypress run --reporter mochawesome --reporter-options "reportDir=cypress/report/mochawesome-report,overwrite=false,html=false,json=true,timestamp=mmddyyyy_HHMMss"'
     postTest:
       commands:
-        - npx mochawesome-merge --reportDir cypress/report/mochawesome-report > cypress/report/mochawesome.json
+        - npx mochawesome-merge cypress/report/mochawesome-report > cypress/report/mochawesome.json