gradle: Downgrade AGP to 8.11.1

* #409

Change-Id: I5bf5c9e7f468281892269594ea74d167b56f19bd

Author: XayahSuSuSu

source/gradle/libs.versions.toml

@@ -51,7 +51,7 @@ bountycastle = "1.79"
 animation-graphics = "1.7.6"
 
 # plugins
-android-gradle-plugin = "8.12.0"
+android-gradle-plugin = "8.11.1"
 kotlin = "2.0.21"
 hilt = "2.48"
 hilt-work-compiler = "1.2.0"