Correctly setup toolchain in benchmarks module (#274)

Author: fzhinkin

benchmarks/build.gradle.kts

@@ -14,12 +14,12 @@ plugins {
 }
 
 kotlin {
-    jvm {
-        jvmToolchain {
-            languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
-        }
+    jvmToolchain {
+        languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
     }
 
+    jvm()
+
     sourceSets {
         commonMain {
             dependencies {