Bump target SDK to 34 (#5246)

Summary:
[android] Bump target SDK to 34
Changelog: Android SDK is now built against SDK 34

Pull Request resolved: https://github.com/facebook/flipper/pull/5246

Test Plan:
 ---
Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/flipper/pull/5246).
* https://github.com/facebook/flipper/issues/5252
* https://github.com/facebook/flipper/issues/5247
* __->__ https://github.com/facebook/flipper/issues/5246
* https://github.com/facebook/flipper/issues/5245

Reviewed By: mweststrate

Differential Revision: D50599215

Pulled By: passy

fbshipit-source-id: a9883fdbab7bdd06a63a2949e1502a7854299752

build.gradle

@@ -49,8 +49,8 @@ subprojects {
 
 ext {
     minSdkVersion = 15
-    targetSdkVersion = 33
-    compileSdkVersion = 33
+    targetSdkVersion = 34
+    compileSdkVersion = 34
     buildToolsVersion = "33.0.2"
     ndkVersion = "25.1.8937393"
     javaTargetVersion = JavaVersion.VERSION_17