chore(android): update Android Gradle plugin from 8.12.0 to 8.12.1

- Update com.android.tools.build:gradle dependency to latest patch version
- Addresses Android Studio update prompt for build tool security
- Minor version bump for stability and bug fixes

Keeps Android build tools current and secure

android/build.gradle

@@ -7,7 +7,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.12.0'
+        classpath 'com.android.tools.build:gradle:8.12.1'
         classpath 'com.google.gms:google-services:4.4.0'
 
         // NOTE: Do not place your application dependencies here; they belong