chore: bump androidx.annotation:annotation in /android

Bumps androidx.annotation:annotation from 1.7.1 to 1.9.1.

---
updated-dependencies:
- dependency-name: androidx.annotation:annotation
  dependency-version: 1.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

android/build.gradle

@@ -129,7 +129,7 @@ dependencies {
 
     testImplementation 'org.mockito:mockito-core:5.8.0'
     androidTestImplementation 'org.mockito:mockito-android:5.8.0'
-    testImplementation 'androidx.annotation:annotation:1.7.1'
+    testImplementation 'androidx.annotation:annotation:1.9.1'
 
     testImplementation 'junit:junit:4.13.2'
     testImplementation files('libs/java-json.jar')