fix: upgrade ionic-angular from 3.9.9 to 3.9.10

Snyk has created this PR to upgrade ionic-angular from 3.9.9 to 3.9.10.

See this package in NPM:
https://www.npmjs.com/package/ionic-angular

See this project in Snyk:
https://app.snyk.io/org/marcusasplund/project/475ed275-e380-4f99-b9c1-3d111522f528?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package.json

@@ -29,7 +29,7 @@
     "cordova-plugin-ionic-webview": "4.1.3",
     "cordova-plugin-splashscreen": "5.0.3",
     "cordova-plugin-whitelist": "1.3.4",
-    "ionic-angular": "3.9.9",
+    "ionic-angular": "3.9.10",
     "ionic-plugin-keyboard": "2.2.1",
     "ionicons": "3.0.0",
     "rxjs": "5.5.12",