chore(deps): update kotest

Author: renovate[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ graphstream = "2.0"
 ignite = "2.16.0"
 junit = "5.11.4"
 konf = "1.1.2"
-kotest = "6.0.0.M1"
+kotest = "6.0.0"
 ktor = "2.3.13"
 kotlin = "2.1.0"
 mockito = "5.15.2"