Revert min SDK to 23

[Bec-de-Xorbin]

Describe the bug
Cannot install on Android TV 7.1.1.

Additional context
Please revert min SDK to 23 like it is on Just Player.

[wasky]

Reverted to API 25 (Android 7.1). Some features may not work on older Android versions. For example, the Medium font style requires Android 9+.