chore: Add schematics tests to CI (#9235)

**What kind of change does this PR introduce?**

Add CI for testing Schematics.

**Did you add tests for your changes?**

Not relevant.

**If relevant, did you update the documentation?**

Not relevant.

**Summary**

We want to check if tests for `@puppeteer/ng-schematics` are passing
after

**Does this PR introduce a breaking change?**

No

**Other information**

.github/workflows/ci.yml

@@ -290,3 +290,19 @@ jobs:
         working-directory: ./docker
         run: |
           docker run -i --init --cap-add=SYS_ADMIN --rm puppeteer-test-image node -e "`cat test/smoke-test.js`"
+
+  ng-schematics-tests:
+    name: Test Angular Schematics
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Node.js
+        uses: actions/setup-node@v3.5.1
+        with:
+          cache: npm
+          node-version: latest
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+      - name: Run tests
+        run: npm run test --workspace @puppeteer/ng-schematics