Bump release version to 3.4.7

Author: kalzEOS

app/build.gradle.kts

@@ -3,8 +3,9 @@ import java.util.Properties
 import org.gradle.api.provider.Property
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
-val appVersionCode = 142
-val appVersionName = "3.4.6"
+// Skipping 3.4.6 as a release checkpoint; the next published release is 3.4.7.
+val appVersionCode = 143
+val appVersionName = "3.4.7"
 
 plugins {
     alias(libs.plugins.android.application)