chore(cicd): add MongoDB for the unit-tests + update Node to 16.x

Author: timoa

.github/workflows/nodejs.yml

@@ -10,7 +10,8 @@ jobs:
 
     strategy:
       matrix:
-        node: ['12']
+        node: ['16']
+        mongodb: ['5.0']
 
     steps:
       - name: Checkout
@@ -25,6 +26,12 @@ jobs:
       - name: Install dependencies
         run: npm install
 
+      - name: Start MongoDB
+        uses: supercharge/mongodb-github-action@1.7.0
+        with:
+          mongodb-version: ${{ matrix.mongodb }}
+          mongodb-db: encryptionAPI
+
       - name: Run Unit-Tests + Code Coverage
         run: npm run test:coverage