fix: added matrix to use node 12 and 16 in release workflow (#201)

Author: abdullahwaheed

.github/workflows/npm-publish.yml

@@ -8,16 +8,19 @@ jobs:
   release:
     name: Release
     runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        version: [12, 16]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: ${{ matrix.version }}
 
       - name: Install dependencies
         run: npm ci