Update dependency com.google.code.gson:gson to v2.8.8

Author: renovate-bot

app/build.gradle

@@ -38,7 +38,7 @@ dependencies {
     implementation 'androidx.cardview:cardview:1.0.0'
 
     implementation "com.google.guava:guava:27.1-android"
-    implementation 'com.google.code.gson:gson:2.8.2'
+    implementation 'com.google.code.gson:gson:2.8.8'
     implementation 'androidx.vectordrawable:vectordrawable:1.0.1'
 
     implementation "androidx.room:room-runtime:2.1.0-alpha04"