Resolve CVE 2020 7660 (#5)

* Resolve security error with mocha

* Rename default branch from master -> main

Author: bspellacy

.github/workflows/test.yml

@@ -2,7 +2,7 @@ name: Test
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 
 jobs: