Change yarn audit to yarn npm audit in GH CI

.github/workflows/main.yml

@@ -34,6 +34,8 @@ jobs:
           yarn build
 
       - name: Run Security Audit
+      # See https://yarnpkg.com/cli/npm/audit for the changed syntax from `yarn audit` to
+      # `yarn npm audit`
         run: |
-          yarn audit --groups dependencies
+           yarn npm audit --environment production
         timeout-minutes: 5