chore(package): update @angular-devkit/build-ng-packagr to version 0.802.1

Closes #64

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "~0.13.8",
-    "@angular-devkit/build-ng-packagr": "~0.13.8",
+    "@angular-devkit/build-ng-packagr": "~0.802.1",
     "@angular/cli": "~7.3.8",
     "@angular/compiler-cli": "^7.2.13",
     "@angular/language-service": "^7.2.13",