build: Added support for node v16

.github/workflows/ci.yml

@@ -1,8 +1,11 @@
 name: Default CI
 on: [push, pull_request]
 jobs:
-  build:
+  tests:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [12, 14, 16]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -11,7 +14,7 @@ jobs:
     - name: Setup Nodejs
       uses: actions/setup-node@v2
       with:
-        node-version: 12
+        node-version: ${{ matrix.node }}
     - name: Install dependencies
       run: npm ci
     - name: Validate package-lock.json changes