Bump org.jetbrains.kotlin.android from 2.0.20 to 2.0.21 (#85)

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

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -6,7 +6,7 @@
 plugins {
     id 'com.android.application' version '8.7.0' apply false
     id 'com.android.library' version '8.7.0' apply false
-    id 'org.jetbrains.kotlin.android' version '2.0.20' apply false
+    id 'org.jetbrains.kotlin.android' version '2.0.21' apply false
     id 'io.github.gradle-nexus.publish-plugin' version '2.0.0'
 }