Bump kotlin from 2.0.20-RC to 2.1.0

Bumps `kotlin` from 2.0.20-RC to 2.1.0.

Updates `org.jetbrains.kotlin.multiplatform` from 2.0.20-RC to 2.1.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v2.0.20-RC...v2.1.0)

Updates `org.jetbrains.kotlin.plugin.compose` from 2.0.20-RC to 2.1.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v2.0.20-RC...v2.1.0)

Updates `org.jetbrains.kotlin.plugin.serialization` from 2.0.20-RC to 2.1.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v2.0.20-RC...v2.1.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin.multiplatform
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin.plugin.compose
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin.plugin.serialization
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 
-kotlin = "2.0.20-RC"
+kotlin = "2.1.0"
 compose = "1.7.0-alpha02"
 agp = "8.2.0"
 androidx-activityCompose = "1.9.1"