fix(deps): update agp to v8.12.0

Author: renovate[bot]

AndroidApp/gradle/libs.versions.toml

@@ -10,7 +10,7 @@ versionName = "1.1"
 # ---------------------------------------------------------
 
 # Library
-agp = "8.9.3"
+agp = "8.12.0"
 kotlin = "2.1.20"
 com-google-devtools-ksp = "2.1.20-2.0.1" # Kotlinのバージョンに合わせる必要がある
 com-jaredsburrows-license = "0.9.8"