Support Flutter 3.0.0

[augusting52]

change kotlin verison from 1.3.72 to 1.5.31

[asaarnak]

https://developer.android.com/studio/releases/gradle-plugin#min-kotlin-version The Android Gradle plugin supports only Kotlin Gradle plugin version 1.5.20 and higher. The following dependencies do not satisfy the required version: project ':image_gallery_saver' -> org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.72

[carlosetorresm]

as a quick fix : https://github.com/hui-z/image_gallery_saver/issues/220#issuecomment-1291778299

Add to your pubspec.yaml

dependency_overrides:
  image_gallery_saver:
    git:
      url: https://github.com/hui-z/image_gallery_saver
      ref: master

[palenik-martin]

Can we use kotlin version 1.8.10?

[woodwen]

update kotlin_version = '1.7.10'