deps android: Upgrade Android Gradle Plugin to 8.5.2

Release notes:
  https://developer.android.com/build/releases/past-releases/agp-8-2-0-release-notes
  https://developer.android.com/build/releases/past-releases/agp-8-3-0-release-notes
  https://developer.android.com/build/releases/past-releases/agp-8-4-0-release-notes
  https://developer.android.com/build/releases/gradle-plugin (for 8.5, for now)

Some of the release notes (especially 8.2) are very thin; it's not
clear if there are other changes that aren't being described, or if
they just didn't change much.

Changes possibly affecting us:
 * 8.3 adds "precise resource shrinking", which seems to be an
   additional form of resource shrinking.
 * As usual, a new AGP version requires a new Android Studio version.
   AGP 8.5 requires Android Studio Koala.

[greg: added reading of release notes]

Fixes: #879

Author: rajveermalviya

android/gradle.properties

@@ -6,7 +6,7 @@ android.enableJetifier=true
 # Defining them here makes them available both in
 # settings.gradle and in the build.gradle files.
 
-agpVersion=8.1.4
+agpVersion=8.5.2
 
 # Generally update this to the version found in recent releases
 # of Android Studio, as listed in this table: