Add temp node 14

Author: sagarchikane

.github/workflows/main.yml

@@ -28,6 +28,11 @@ jobs:
         Xvfb -ac :99 -screen 0 1280x1024x16 &
         export DISPLAY=:99
         npm run testci:mobxangular
+
+    - name: "Install Node"
+      uses: actions/setup-node@v3.6.0
+      with:
+        node-version: '14'
 
     - name: "Compare bundle sizes"
       uses: preactjs/compressed-size-action@2.5.0