Package updates

Author: Matt Randle

package-lock.json

@@ -19,10 +19,10 @@
     "@angular/platform-browser": "~7.1.0",
     "@angular/platform-browser-dynamic": "~7.1.0",
     "@angular/router": "~7.1.0",
-    "core-js": "^2.5.4",
+    "core-js": "^2.6.2",
     "rxjs": "~6.3.3",
     "tslib": "^1.9.0",
-    "zone.js": "~0.8.26"
+    "zone.js": "^0.8.27"
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "^0.12.1",