fix(deps): update kotlin monorepo to v2.2.21

Author: renovate[bot]

gradle/libs.versions.toml

@@ -19,7 +19,7 @@ leakcanary = "2.14"
 hilt = "2.57.2"
 hiltExt = "1.2.0"
 jackson = "2.20.0"
-kotlin = "2.2.0"
+kotlin = "2.2.21"
 coroutines = "1.10.2"
 datetime = "0.7.0"
 serialization = "1.9.0"