chore(package): update @angular/cli to version 8.0.6

Closes #62

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "@angular-devkit/build-angular": "~0.13.8",
     "@angular-devkit/build-ng-packagr": "~0.13.8",
-    "@angular/cli": "~7.3.8",
+    "@angular/cli": "~8.0.6",
     "@angular/compiler-cli": "^7.2.13",
     "@angular/language-service": "^7.2.13",
     "@commitlint/cli": "^7.5.2",