Add back node16 version

.github/workflows/build.yml

@@ -14,13 +14,13 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18]
+        node-version: [16, 18]
 
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: ${{ matrix.node-version }}.x
           cache: 'npm'
       - run: npm ci
       - run: npm test
@@ -31,11 +31,6 @@ jobs:
           flag-name: run-node-${{ matrix.node-version }}
           parallel: true
           path-to-lcov: coverage/lcov.info
-      # - name: Package test project with Serverless v2
-      #   working-directory: ./serverless-test-project
-      #   run: |
-      #     npm i serverless@2
-      #     npm run test:v2
   finish:
     needs: build
     runs-on: ubuntu-latest