Update dependency com.android.tools.build:gradle to v8.6.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.5.2"
+agp = "8.6.0"
 androidx_activity_compose = "1.9.1"
 androidx_test = "1.6.1"
 androidx_test_ext = "1.2.1"