Bump com.expediagroup:graphql-kotlin-ktor-client from 8.4.0 to 8.6.0

Bumps [com.expediagroup:graphql-kotlin-ktor-client](https://github.com/ExpediaGroup/graphql-kotlin) from 8.4.0 to 8.6.0.
- [Release notes](https://github.com/ExpediaGroup/graphql-kotlin/releases)
- [Commits](ExpediaGroup/graphql-kotlin@8.4.0...8.6.0)

---
updated-dependencies:
- dependency-name: com.expediagroup:graphql-kotlin-ktor-client
  dependency-version: 8.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -16,7 +16,7 @@ val nav_common_version = "3.2025.03.25_13.00-69496eec5820"
 val tjenestespec_version = "1.2021.02.22-10.45-4201aaea72fb"
 val modia_common_utils_version = "1.2025.04.10-08.38-f3f297ca275e"
 val junit_version = "5.12.2"
-val graphql_kotlin_version = "8.4.0"
+val graphql_kotlin_version = "8.6.0"
 
 plugins {
     application