chore: Update testing dependencies

Author: osipxd

gradle/libs.versions.toml

@@ -17,13 +17,13 @@ mmoitems = "6.9.5-SNAPSHOT"
 mythiclib = "1.6.2-SNAPSHOT"
 heroes = "1.9.30-RELEASE"
 
-junit = "5.10.1"
-kotest = "5.8.0"
-mockk = "1.13.8"
+junit = "5.12.2"
+kotest = "6.0.0.M3"
+mockk = "1.14.0"
 
 gradlePlugin-bukkitgradle = "1.0.0"
-gradlePlugin-shadow = "8.1.1"
-gradlePlugin-versions = "0.50.0"
+gradlePlugin-shadow = "8.3.6"
+gradlePlugin-versions = "0.52.0"
 
 [libraries]
 
@@ -56,7 +56,7 @@ kotlinx-binaryCompatibilityValidator = { module = "org.jetbrains.kotlinx:binary-
 [plugins]
 
 bukkitgradle = { id = "ru.endlesscode.bukkitgradle", version.ref = "gradlePlugin-bukkitgradle" }
-shadow = { id = "com.github.johnrengelman.shadow", version.ref = "gradlePlugin-shadow" }
+shadow = { id = "com.gradleup.shadow", version.ref = "gradlePlugin-shadow" }
 versions = { id = "com.github.ben-manes.versions", version.ref = "gradlePlugin-versions" }
 
 [bundles]