updates GH actions to Node LTS and removes yarn

Author: Eric Nograles

.github/workflows/npm-publish.yml

@@ -12,12 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
-        with:
-          node-version: 12
-      - uses: borales/[email protected]
+      - uses: actions/setup-node@v2
         with:
-          cmd: install
+          node-version: 14
+      - run: npm install
 
   publish-npm:
     needs: build