ci: run integration as part of CI

Author: barmac

.github/workflows/CI.yml

@@ -15,4 +15,8 @@ jobs:
     - name: Install dependencies
       run: npm ci
     - name: Build
-      run: npm run all
+      run: npm run all
+    - name: Fetch connector templates
+      run: npm run fetch:connector-templates
+    - name: Run integration test
+      run: npm run test:integration