Downgrade android gradle plugin to version 7.2.1.

Version 7.3.0 changes the build layout which causes updates to the generated shared libraries to not be picked up.

platform/android/java/app/config.gradle

@@ -1,5 +1,5 @@
 ext.versions = [
-    androidGradlePlugin: '7.3.0',
+    androidGradlePlugin: '7.2.1',
     compileSdk         : 33,
     minSdk             : 19, // Also update 'platform/android/export/export_plugin.cpp#DEFAULT_MIN_SDK_VERSION'
     targetSdk          : 33, // Also update 'platform/android/export/export_plugin.cpp#DEFAULT_TARGET_SDK_VERSION'