[dependabot]: Bump the kotlin-gradle-plugin group across 7 directories with 1 update

Bumps the kotlin-gradle-plugin group with 1 update in the /packages/camera/camera_android_camerax/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/google_sign_in/google_sign_in_android/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/interactive_media_ads/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/pigeon/platform_tests/test_plugin/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/shared_preferences/shared_preferences_android/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/video_player/video_player_android/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).
Bumps the kotlin-gradle-plugin group with 1 update in the /packages/webview_flutter/webview_flutter_android/android directory: [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin).


Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.2.10 to 2.2.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.10...v2.2.21)

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

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

Author: dependabot[bot]

packages/camera/camera_android_camerax/android/build.gradle

@@ -2,7 +2,7 @@ group = 'io.flutter.plugins.camerax'
 version = '1.0'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/google_sign_in/google_sign_in_android/android/build.gradle

@@ -2,7 +2,7 @@ group = 'io.flutter.plugins.googlesignin'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/interactive_media_ads/android/build.gradle

@@ -2,7 +2,7 @@ group = 'dev.flutter.packages.interactive_media_ads'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/pigeon/platform_tests/test_plugin/android/build.gradle

@@ -2,7 +2,7 @@ group = 'com.example.test_plugin'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/shared_preferences/shared_preferences_android/android/build.gradle

@@ -2,7 +2,7 @@ group = 'io.flutter.plugins.sharedpreferences'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/video_player/video_player_android/android/build.gradle

@@ -2,7 +2,7 @@ group = 'io.flutter.plugins.videoplayer'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

packages/webview_flutter/webview_flutter_android/android/build.gradle

@@ -2,7 +2,7 @@ group = 'io.flutter.plugins.webviewflutter'
 version = '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '2.2.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()