node 14 gh pages

Author: michaljaz

.github/workflows/github-pages.yaml

@@ -9,7 +9,9 @@ jobs:
     steps:
       - name: Checkout 🛎️
         uses: actions/checkout@v2.3.1
-
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14
       - name: Install and Build 🔧
         run: |
           npm install