chore: update @angular/cli to version 1.4.9 (#43)

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
     "zone.js": "^0.8.14"
   },
   "devDependencies": {
-    "@angular/cli": "1.4.8",
+    "@angular/cli": "1.4.9",
     "@angular/compiler-cli": "^4.3.1",
     "@angular/language-service": "^4.3.1",
     "@types/chai": "^4.0.1",

yarn.lock

@@ -32,9 +32,9 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/cli@1.4.8":
-  version "1.4.8"
-  resolved "https://registry.yarnpkg.com/@angular/cli/-/cli-1.4.8.tgz#3d5399c1cf86696aa790ed93afd5d865b0a5b7ee"
+"@angular/cli@1.4.9":
+  version "1.4.9"
+  resolved "https://registry.yarnpkg.com/@angular/cli/-/cli-1.4.9.tgz#cd5cd7a8f3bf3a1c28dfcdc523a011f0fcebfb96"
   dependencies:
     "@angular-devkit/build-optimizer" "~0.0.28"
     "@angular-devkit/schematics" "~0.0.34"