Bump org.jetbrains.kotlin:kotlin-stdlib-jdk8 from 2.0.20-Beta1 to 2.0.20

Bumps [org.jetbrains.kotlin:kotlin-stdlib-jdk8](https://github.com/JetBrains/kotlin) from 2.0.20-Beta1 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@v2.0.20-Beta1...v2.0.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 detekt = "1.23.6"  # Note: Plugin versions must be updated in the settings.gradle.kts too
-kotlin = "2.0.20-Beta1"  # Note: Plugin versions must be updated in the settings.gradle.kts too
+kotlin = "2.0.20"  # Note: Plugin versions must be updated in the settings.gradle.kts too
 
 kx-ser = "1.7.1"
 logging = "7.0.0"