Update @angular-devkit/build-angular to the latest version 🚀 (#4231)

* chore(package): update @angular-devkit/build-angular to version 0.803.1

* chore(package): update lockfile package-lock.json

package.json

@@ -130,7 +130,7 @@
     "zone.js": "0.9.1"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "0.802.1",
+    "@angular-devkit/build-angular": "0.803.1",
     "@angular/cli": "8.3.0",
     "@angular/compiler-cli": "8.0.3",
     "@angular/language-service": "8.0.3",