Upgrade Android Gradle build tools for dynamic_theme (#2799)

This commit updates the Android Gradle configuration:

*   Bumps the Android Gradle Plugin version from 7.3.0 to 8.9.1.
*   Upgrades the Kotlin Android plugin version from 1.7.10 to 2.1.0.
* Updates the Gradle wrapper distribution from version 7.6.3 to 8.11.1.

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).

@ericwindmill

Co-authored-by: Eric Windmill <eric@ericwindmill.com>

Author: NiazSagor

dynamic_theme/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-all.zip

dynamic_theme/android/settings.gradle

@@ -19,8 +19,8 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "7.3.0" apply false
-    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+    id "com.android.application" version "8.9.1" apply false
+    id "org.jetbrains.kotlin.android" version "2.1.0" apply false
 }
 
 include ":app"