Bump org.jetbrains.kotlinx:kotlinx-coroutines-core from 1.8.1 to 1.9.0

Bumps [org.jetbrains.kotlinx:kotlinx-coroutines-core](https://github.com/Kotlin/kotlinx.coroutines) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/Kotlin/kotlinx.coroutines/releases)
- [Changelog](https://github.com/Kotlin/kotlinx.coroutines/blob/master/CHANGES.md)
- [Commits](Kotlin/kotlinx.coroutines@1.8.1...1.9.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-coroutines-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -67,7 +67,7 @@ dependencies {
     val skattKontraktVersjon = "2.0_20230214104704_706e9c0"
     val fellesVersjon = "3.20240806111424_fff2930"
     val kontrakterVersjon = "3.0_20231109091547_fd2cae7"
-    val coroutinesVersion = "1.8.1"
+    val coroutinesVersion = "1.9.0"
     val okhttp3Version = "5.0.0-alpha.14"
 
     // ---------- Spring ---------- \\