fix(package): update @angular-devkit/build-angular to version 0.803.0

Closes #113

Author: greenkeeper[bot]

package.json

@@ -90,7 +90,7 @@
   },
   "dependencies": {
     "@angular-devkit/architect": "0.13.9",
-    "@angular-devkit/build-angular": "0.13.9",
+    "@angular-devkit/build-angular": "0.803.0",
     "@angular-devkit/core": "7.3.9",
     "@angular-devkit/schematics": "7.3.9",
     "@nestjs/common": "6.1.1",