use yarn instead of npm in publish workflow

Author: ToastedDev

.github/workflows/publish.yml

@@ -13,7 +13,9 @@ jobs:
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/
-      - run: npm ci
+      - uses: borales/[email protected]
+        with:
+          cmd: install
       - run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}