Update 9.2.1 forces to install Android SDK platform 31 and Android SDK Build Tools 30.0.3

[REQUIRED] Step 1: Describe your environment

Unity version: 2021.3.42f1
Google Mobile Ads Unity plugin version: 9.2.1
Plugin installation method: Unity package manager, .unitypackage import
Platform: Android
Platform OS version: All
Any specific devices issue occurs on: All
Mediation ad networks used, and their versions: None

[REQUIRED] Step 2: Describe the problem

After upgrade to Google Mobile Ads Unity 9.2.1 Unity build fails with the following message:

What went wrong: Could not determine the dependencies of task ':unityLibrary:GoogleMobileAdsPlugin.androidlib:compileReleaseAidl'. Failed to install the following Android SDK packages as some licences have not been accepted. platforms;android-31 Android SDK Platform 31 build-tools;30.0.3 Android SDK Build-Tools 30.0.3 To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager. All licenses can be accepted using the sdkmanager command line tool: sdkmanager.bat --licenses Or, to transfer the license agreements from one workstation to another, see https://developer.android.com/studio/intro/update.html#download-with-gradle Using Android SDK: /Applications/Unity2021.3.42/PlaybackEngines/AndroidPlayer/SDK

I think this may happen because of new build.gradle was added for GoogleMobileAdsPlugin.androidlib in 9.2.1

If I additionally install Android SDK Platform 31 and Android SDK Build-Tools 30.0.3 for Unity 2021 then the build completes successfully. By default Unity 2021.3.42f1 has Platforms 33 and 34, and Build-Tools 32.0.0 (https://docs.unity3d.com/2021.3/Documentation/Manual/android-sdksetup.html)

Is it possible for Google Mobile Ads not to depend on those specific platform and build-tools versions?

Steps to reproduce:

Just build the app with default settings

Relevant Code:

This is from build.gradle from GoogleMobileAdsPlugin.androidlib which I think may be the cause of the issue:

apply plugin: 'android-library'

android {
    namespace "com.google.unity.ads"
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
        }
    }

    compileSdkVersion 31
    defaultConfig {
        minSdkVersion 21
        targetSdkVersion 31
    }
}

googleads / googleads-mobile-unity