fix(deps): update dependency com.google.code.gson:gson to v2.12.0

Author: renovate[bot]

app/build.gradle

@@ -130,7 +130,7 @@ dependencies {
     implementation 'com.squareup.retrofit2:retrofit:2.11.0'
 
     // Gson
-    implementation 'com.google.code.gson:gson:2.11.0'
+    implementation 'com.google.code.gson:gson:2.12.0'
 
     // ReactiveX
     implementation 'io.reactivex.rxjava2:rxjava:2.2.21'