Bump org.jetbrains.kotlin:kotlin-stdlib from 2.2.0 to 2.2.21 in /android (#444)

Bumps [org.jetbrains.kotlin:kotlin-stdlib](https://github.com/JetBrains/kotlin) from 2.2.0 to 2.2.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.2.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.0...v2.2.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib
  dependency-version: 2.2.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

android/app/build.gradle

@@ -101,7 +101,7 @@ flutter {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:2.2.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:2.2.21"
     testImplementation "junit:junit:4.13.2"
     // https://developer.android.com/jetpack/androidx/releases/test/#1.2.0
     coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:2.1.5"