chore: add prettier step to npm publish workflow

Author: gabriel-logan

.github/workflows/npm-publish.yml

@@ -28,6 +28,8 @@ jobs:
         run: yarn install
       - name: Run tests
         run: yarn test
+      - name: Run prettier
+        run: yarn format
       - name: Build
         run: yarn build
       - name: Publish to NPM