fix: Example building, due to Kotlin version

jkasten2 · jkasten2 · commit e7ec756b0cd5 · 2026-02-04T10:51:52.000-08:00
Use 1.9.25 which matches exactly what we use to build the SDK.
diff --git a/Examples/OneSignalDemo/build.gradle b/Examples/OneSignalDemo/build.gradle
@@ -2,7 +2,7 @@
 
 buildscript {
     ext {
-        kotlinVersion = '1.7.10'
+        kotlinVersion = '1.9.25'
     }
     repositories {
         google()
