Bump OneSignal Android SDK in example app

Author: shepherd-l

OneSignalExample/Assets/Plugins/Android/mainTemplate.gradle

@@ -6,7 +6,7 @@ apply plugin: 'com.android.library'
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 // Android Resolver Dependencies Start
-    implementation 'com.onesignal:OneSignal:5.1.25' // Packages/com.onesignal.unity.android/Editor/OneSignalAndroidDependencies.xml:6
+    implementation 'com.onesignal:OneSignal:5.1.26' // Packages/com.onesignal.unity.android/Editor/OneSignalAndroidDependencies.xml:6
 // Android Resolver Dependencies End
 **DEPS**}
 

OneSignalExample/ProjectSettings/AndroidResolverDependencies.xml

@@ -1,6 +1,6 @@
 <dependencies>
   <packages>
-    <package>com.onesignal:OneSignal:5.1.25</package>
+    <package>com.onesignal:OneSignal:5.1.26</package>
   </packages>
   <files />
   <settings>