infra: Bump CI to node 14 (#8426)

infra: Remove duplicated ES2019 plugin

.eslintrc.yml

@@ -1,6 +1,6 @@
 extends:
   - chartjs
-  - plugin:es/no-2019
+  - plugin:es/no-new-in-es2019
 
 env:
   es6: true

.github/workflows/ci.yml

@@ -26,6 +26,8 @@ jobs:
     - uses: actions/checkout@v2
     - name: Use Node.js
       uses: actions/setup-node@v1
+      with:
+        node-version: '14'
     - uses: dorny/paths-filter@v2
       id: changes
       with: