Bump kotlin from 2.0.21 to 2.1.0

Bumps `kotlin` from 2.0.21 to 2.1.0.

Updates `org.jetbrains.kotlin.android` from 2.0.21 to 2.1.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.21...v2.1.0)

Updates `org.jetbrains.kotlin.plugin.serialization` from 2.0.21 to 2.1.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.21...v2.1.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin.android
  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] <[email protected]>

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ androidx-paging = "3.3.4"
 androidx-test-ext-junit = "1.2.1"
 detekt = "1.23.7"
 junit = "4.13.2"
-kotlin = "2.0.21"
+kotlin = "2.1.0"
 kotlinx-serialization = "1.7.3"
 okhttp = "4.12.0"
 retrofit = "2.11.0"