docs: update mobile release notes for v14.1.15

Author: MendixMobile

.github/workflows/sync.yml

@@ -5,6 +5,12 @@ weight: 6
 description: "Native Template 14"
 ---
 
+## 14.1.15
+
+**Release date: Apr 22, 2026**
+
+- We updated `@mendix/native` to v9.3.1, strengthening Android cookie encryption by migrating from `AES/CBC/PKCS7Padding` to `AES/GCM/NoPadding`.
+
 ## 14.1.14 {#1424}
 
 **Release date: Feb 25, 2026**