update workflow node version

.github/workflows/client.yml

@@ -48,10 +48,10 @@ jobs:
       - name: Figure out the PR number
         run: echo ${{ github.event.pull_request.number }}
 
-      - name: Use Node.js 10.16.3
+      - name: Use Node.js 14.15.4
         uses: actions/setup-node@v1
         with:
-          node-version: "10.16.3"
+          node-version: "14.15.4"
 
       # Retrieve npm dependencies from cache. After a successful run, these dependencies are cached again
       - name: Cache npm dependencies