Bump kotlin from 2.1.10 to 2.2.20

Bumps `kotlin` from 2.1.10 to 2.2.20.

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.1.10 to 2.2.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.2.20)

Updates `org.jetbrains.kotlin:kotlin-serialization` from 2.1.10 to 2.2.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.2.20)

Updates `org.jetbrains.kotlin:kotlin-allopen` from 2.1.10 to 2.2.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.2.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-version: 2.2.20
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-serialization
  dependency-version: 2.2.20
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-allopen
  dependency-version: 2.2.20
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

buildSrc/build.gradle.kts

@@ -12,7 +12,7 @@ repositories {
 }
 
 dependencies {
-    val kotlin = "2.1.10"
+    val kotlin = "2.2.20"
     val helm = "2.2.0"
     implementation("org.springframework.boot:spring-boot-gradle-plugin:3.4.3")
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin")