Bump graphql from 8.3.0 to 8.4.0 (#31)

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 kotlin = "2.1.10"
 kotest = "6.0.0.M2"
 serialization = "1.8.0"
-graphql = "8.3.0"
+graphql = "8.4.0"
 
 [plugins]
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }