fix: Return Empty Result (#28)

Update `cordova-plugin-secure-storage` to version 2.6.8-OS15.

Author: OS-ricardomoreirasilva

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixes
+- Fix: [iOS] When there are no keys associated with a store, return empty string instead of `nil`.
 
 ## [2.1.1] - 2022-11-09
 ### Features

plugin.xml

@@ -15,7 +15,7 @@
     </js-module>
 
     <dependency id="cordova-sqlcipher-adapter" url="https://github.com/OutSystems/cordova-sqlcipher-adapter.git#0.1.7-OS7" />
-    <dependency id="cordova-plugin-secure-storage" url="https://github.com/OutSystems/cordova-plugin-secure-storage.git#2.6.8-OS14" />
+    <dependency id="cordova-plugin-secure-storage" url="https://github.com/OutSystems/cordova-plugin-secure-storage.git#2.6.8-OS15" />
 
     <dependency id="outsystems-plugin-disable-backup" url="https://github.com/OutSystems/outsystems-plugin-disable-backup.git#1.0.2" />