(chore) Bump android SDK and related versions

[gabbopalma]

Closes issue #622.

TODO and changes list

• Android SDK 36
• buildTools 36.0.0
• JavaVersion 21
• kotlin_version 2.1.0
• AGP 8.12.0

[Copilot]

Pull Request Overview

This PR updates Android SDK and related tool versions to their latest releases, including Android SDK 36, build tools 36.0.0, Java 21, Kotlin 2.1.0, and Android Gradle Plugin 8.12.0. It also includes an important fix to prevent blocking UI operations in the MapLibre widget update lifecycle.

• Updated Android SDK from 35 to 36 with corresponding build tools version
• Upgraded Java version from 17/1.8 to 21 across all Android configurations
• Updated Kotlin and Android Gradle Plugin to latest versions
• Fixed async operation handling in MapLibre widget lifecycle

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
maplibre_gl_example/android/settings.gradle	Updated AGP and Kotlin plugin versions
maplibre_gl_example/android/app/build.gradle	Updated SDK, build tools, and Java versions for example app
maplibre_gl/lib/src/maplibre_map.dart	Fixed blocking async operation in widget update lifecycle
maplibre_gl/android/build.gradle	Updated SDK, build tools, Java, Kotlin, and AGP versions for plugin

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