chore(deps): Bump kotlin from 1.9.10 to 1.9.21

Bumps `kotlin` from 1.9.10 to 1.9.21.

Updates `org.jetbrains.kotlin:kotlin-bom` from 1.9.10 to 1.9.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.10...v1.9.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 1.9.10 to 1.9.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.10...v1.9.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ androidx-compose-compiler = "1.5.3" # https://developer.android.com/jetpack/andr
 androidx-lifecycle = "2.6.2"
 google-accompanist = "0.32.0"
 kotest = "5.8.0"
-kotlin = "1.9.10"
+kotlin = "1.9.21"
 kotlinx-coroutines = "1.7.3"
 mikepenz-aboutlibraries = "10.9.1"