Make sure nodejs runs with a specific version to not break build. (#33)

Author: ndeet

.github/workflows/wp-release.yml

@@ -15,9 +15,15 @@ jobs:
           dev: no
           php_version: 7.4
           php_extensions: bcmath
-      - name: Build assets and translation files
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '16'
+      - name: Install Node.js dependencies
         run: |
           npm install
+      - name: Build assets and translation files
+        run: |
           npm run build
       - name: WordPress Plugin Deploy
         id: deploy