fix: npm install for docs workflow

Author: stigi

.github/workflows/publish-docs.yml

@@ -12,6 +12,11 @@ jobs:
       - name: Checkout code  
         uses: actions/checkout@v4
 
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - uses: bahmutov/npm-install@v1
+
       - name: Build docs
         run: yarn build:docs