Update agp to v8.6.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ kotlin = "1.9.0"
 ksp = "1.9.0-1.0.13"
 detekt = "1.23.1"
 compile-testing-ksp = "1.5.0"
-agp = '8.1.1'
+agp = '8.6.1'
 
 [libraries]
 ksp-api = { group = "com.google.devtools.ksp", name = "symbol-processing-api", version.ref = "ksp" }