Update kotest

Author: renovate[bot]

kotest-javascript/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 kotlin = "2.2.0"
-kotest = "6.0.0-LOCAL"
+kotest = "6.0.0.M4"
 ktor = "3.0.1"
 
 [libraries]

kotest-native/gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotest = "6.0.0-LOCAL"
+kotest = "6.0.0.M4"
 kotlin = "2.2.0"
 
 [libraries]

kotest-spring-webflux/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 kotlin = "1.6.21"
-kotest = "5.4.2"
+kotest = "5.9.1"
 
 [libraries]
 kotest-runner-junit5 = { module = "io.kotest:kotest-runner-junit5", version.ref = "kotest" }