chore(package): update @angular/cli to version 9.0.3

Closes #34

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "^0.13.1",
-    "@angular/cli": "^7.1.1",
+    "@angular/cli": "^9.0.3",
     "@angular/compiler-cli": "^7.1.1",
     "@angular/language-service": "^7.1.1",
     "@types/jasmine": "^3.3.1",