Bump AGP to 8.1.2 (#5245)

Summary:
[android] Bump AGP to 8.1.2

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Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/flipper/pull/5245).
* https://github.com/facebook/flipper/issues/5247
* https://github.com/facebook/flipper/issues/5246
* __->__ https://github.com/facebook/flipper/issues/5245

Pull Request resolved: https://github.com/facebook/flipper/pull/5245

Reviewed By: lblasa

Differential Revision: D50599214

Pulled By: passy

fbshipit-source-id: 10ac3000fa3b884cbfb629ab8410c6e722e3111c

build.gradle

@@ -11,7 +11,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.1.0'
+        classpath 'com.android.tools.build:gradle:8.1.2'
         classpath 'com.vanniktech:gradle-maven-publish-plugin:0.25.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$KOTLIN_VERSION"
         classpath "org.jetbrains.kotlin:kotlin-serialization:$KOTLIN_VERSION"