Bump com.google.code.gson:gson in /android-refimpl-app

Bumps [com.google.code.gson:gson](https://github.com/google/gson) from 2.11.0 to 2.12.1.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/main/CHANGELOG.md)
- [Commits](google/gson@gson-parent-2.11.0...gson-parent-2.12.1)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

android-refimpl-app/app/build.gradle

@@ -396,7 +396,7 @@ dependencies {
     androidTestImplementation 'androidx.multidex:multidex:2.0.1'
     androidTestImplementation 'androidx.multidex:multidex-instrumentation:2.0.0'
     implementation 'info.guardianproject.netcipher:netcipher:2.1.0'
-    implementation 'com.google.code.gson:gson:2.11.0'
+    implementation 'com.google.code.gson:gson:2.12.1'
     implementation 'com.github.medyo:android-about-page:1.2.4'
     implementation 'de.hdodenhof:circleimageview:2.2.0'
     implementation 'me.zhanghai.android.patternlock:library:2.1.2'