chore(deps): bump org.jetbrains.kotlin.android in /WearOS

Bumps [org.jetbrains.kotlin.android](https://github.com/JetBrains/kotlin) from 2.1.0 to 2.1.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.0...v2.1.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin.android
  dependency-version: 2.1.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

WearOS/build.gradle.kts

@@ -17,5 +17,5 @@
 plugins {
     id("com.android.application") version "8.8.0" apply false
     id("com.google.android.libraries.mapsplatform.secrets-gradle-plugin") version "2.0.1" apply false
-    id("org.jetbrains.kotlin.android") version "2.1.0" apply false
+    id("org.jetbrains.kotlin.android") version "2.1.21" apply false
 }