Bump jvm in /samples/lambda-kotlin-request-router-sample

Bumps [jvm](https://github.com/JetBrains/kotlin) from 2.0.0 to 2.0.20.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.0...v2.0.20)

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

samples/lambda-kotlin-request-router-sample/build.gradle.kts

@@ -14,7 +14,7 @@ buildscript {
 
 plugins {
     java
-    kotlin("jvm") version "2.0.0"
+    kotlin("jvm") version "2.0.20"
     idea
     id("com.github.johnrengelman.shadow") version "8.1.1"
     id("org.jmailen.kotlinter") version "4.3.0"