Update dependency com.android.tools.build:gradle to v8.12.0 (#305)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.11.1"
+agp = "8.12.0"
 androidx_activity_compose = "1.10.1"
 androidx_test = "1.7.0"
 androidx_test_ext = "1.3.0"