test PWA update

refs #445

ngsw-config.json

@@ -2,7 +2,7 @@
   "$schema": "./node_modules/@angular/service-worker/config/schema.json",
   "index": "/index.html",
   "appData": {
-    "version": "4.16.0"
+    "version": "4.16.0-test1"
   },
   "assetGroups": [
     {
@@ -28,4 +28,4 @@
       }
     }
   ]
-}
\ No newline at end of file
+}