Bump the gradle-test-app group across 1 directory with 3 updates (#878)

Bumps the gradle-test-app group with 3 updates in the /dusseldorf-ktor-testapp directory: [org.junit.jupiter:junit-jupiter-api](https://github.com/junit-team/junit5), [org.junit.jupiter:junit-jupiter-engine](https://github.com/junit-team/junit5) and [jvm](https://github.com/JetBrains/kotlin).


Updates `org.junit.jupiter:junit-jupiter-api` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

Updates `org.junit.jupiter:junit-jupiter-engine` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

Updates `org.junit.jupiter:junit-jupiter-engine` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

Updates `jvm` from 2.1.10 to 2.1.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.1.20)

---
updated-dependencies:
- dependency-name: org.junit.jupiter:junit-jupiter-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-test-app
- dependency-name: org.junit.jupiter:junit-jupiter-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-test-app
- dependency-name: org.junit.jupiter:junit-jupiter-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-test-app
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gradle-test-app
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dusseldorf-ktor-testapp/build.gradle.kts

@@ -3,12 +3,12 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 val dusseldorfKtorVersion = "PLACEHOLDER"
 val ktorVersion = ext.get("ktorVersion").toString()
-val junitJupiterVersion = "5.11.4"
+val junitJupiterVersion = "5.12.1"
 
 val mainClass = "no.nav.AppKt"
 
 plugins {
-    kotlin("jvm") version "2.1.10"
+    kotlin("jvm") version "2.1.20"
     id("com.github.johnrengelman.shadow") version "8.1.1"
 }