.github/workflows: add access flag to publish

Author: jonathaningram

.github/workflows/npm-publish.yml

@@ -28,6 +28,6 @@ jobs:
           node-version: 12
           registry-url: https://registry.npmjs.org/
       - run: npm ci
-      - run: npm publish
+      - run: npm publish --access public
         env:
           NODE_AUTH_TOKEN: ${{secrets.npm_token}}