Fix Android deprecations

[Jean-BaptisteC]

With gradle 7.0 version, some attributes have changed:

• minSdkVersion become minSdk
• targetSdkVersion become targetSdk

More information here:

• https://developer.android.com/reference/tools/gradle-api/7.0/com/android/build/api/dsl/BaseFlavor#minsdk
• https://developer.android.com/reference/tools/gradle-api/7.0/com/android/build/api/dsl/ApplicationBaseFlavor#targetsdk

[azarz]

Thanks for the PR! Could you remove the .github/workflows files from it so I can merge it?

[Jean-BaptisteC]

Done

[azarz]

Thanks!