build(deps): bump kotlin from 2.0.20 to 2.0.21

Bumps `kotlin` from 2.0.20 to 2.0.21.

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin.plugin.compose:org.jetbrains.kotlin.plugin.compose.gradle.plugin` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin.jvm` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin.multiplatform` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin.plugin.compose` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin.plugin.sam.with.receiver` from 2.0.20 to 2.0.21

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin.plugin.compose:org.jetbrains.kotlin.plugin.compose.gradle.plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin.jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin.multiplatform
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin.plugin.compose
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin.plugin.sam.with.receiver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -26,7 +26,7 @@ kotlinCoreLibraries = "1.9.24"
 # https://github.com/JetBrains/kotlin/releases
 # WARNING: Remember to update the version badge and examples in `README.md`!
 #  And the version in the KMP cache key in the `.github/workflows/build.yml`!
-kotlin = "2.0.20"
+kotlin = "2.0.21"
 
 # https://github.com/google/ksp/releases
 ksp = "2.0.20-1.0.25"