chore(deps): bump the github group with 2 updates

Bumps the github group with 2 updates: [org.jetbrains.kotlin:kotlin-test-junit5](https://github.com/JetBrains/kotlin) and [jvm](https://github.com/JetBrains/kotlin).


Updates `org.jetbrains.kotlin:kotlin-test-junit5` from 2.1.20 to 2.1.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

Updates `jvm` from 2.1.20 to 2.1.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit5
  dependency-version: 2.1.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github
- dependency-name: jvm
  dependency-version: 2.1.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle.kts

@@ -10,7 +10,7 @@ val mockWebServerVersion = "4.12.0"
 val jacksonVersion = "2.19.0"
 val nettyVersion = "4.2.1.Final"
 val junitJupiterVersion = "5.12.2"
-val kotlinVersion = "2.1.20"
+val kotlinVersion = "2.1.21"
 val freemarkerVersion = "2.3.34"
 val kotestVersion = "5.9.1"
 val bouncyCastleVersion = "1.80"
@@ -24,7 +24,7 @@ val mainClassKt = "no.nav.security.mock.oauth2.StandaloneMockOAuth2ServerKt"
 
 plugins {
     application
-    kotlin("jvm") version "2.1.20"
+    kotlin("jvm") version "2.1.21"
     id("se.patrikerdes.use-latest-versions") version "0.2.18"
     id("com.github.ben-manes.versions") version "0.52.0"
     id("org.jmailen.kotlinter") version "5.0.2"