Executing tests on push and pull request (#2)

* update package-lock.json
* run npm test on every push and pull request using node 16 and 18

Author: lukaszbudnik

.github/workflows/aws-cdk-tests.yml

@@ -0,0 +1,21 @@
+name: AWS CDK CI
+
+on: [ push, pull_request ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x, 18.x]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm ci
+      - run: npm test