Bump graphql from 8.5.0 to 8.6.0 (#38)

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 kotlin = "2.1.20"
 kotest = "6.0.0.M3"
 serialization = "1.8.1"
-graphql = "8.5.0"
+graphql = "8.6.0"
 
 [plugins]
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }