fix: upgrade @ionic/storage from 2.1.3 to 2.2.0

Snyk has created this PR to upgrade @ionic/storage from 2.1.3 to 2.2.0.

See this package in NPM:
https://www.npmjs.com/package/@ionic/storage

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

@@ -22,7 +22,7 @@
     "@ionic-native/core": "4.20.0",
     "@ionic-native/splash-screen": "4.20.0",
     "@ionic-native/status-bar": "4.20.0",
-    "@ionic/storage": "2.1.3",
+    "@ionic/storage": "2.2.0",
     "cordova-android": "8.1.0",
     "cordova-plugin-camera": "4.1.0",
     "cordova-plugin-device": "2.0.3",