chore: change nativescript-angular version

Author: VladimirAmiorkov

demo-angular/package.json

@@ -17,7 +17,7 @@
     "@angular/platform-browser": "~8.0.0",
     "@angular/platform-browser-dynamic": "~8.0.0",
     "@angular/router": "~8.0.0",
-    "nativescript-angular": "^8.0.0",
+    "nativescript-angular": "~8.0.0",
     "nativescript-imagepicker": "../src",
     "nativescript-theme-core": "^1.0.4",
     "nativescript-unit-test-runner": "^0.3.4",