build.gradle: update versionCode to match playstore (#711)

udpates #cleanup

Manual bump for now to fix issues with FDroid builds.

Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>

android/build.gradle

@@ -37,7 +37,7 @@ android {
     defaultConfig {
         minSdkVersion 26
         targetSdkVersion 35
-        versionCode 356
+        versionCode 468
         versionName getVersionProperty("VERSION_LONG")
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"