android apk: bump targetSdkVersion to 37 (by 2027-08-31?)

[SomberNight]

We should bump our targetSdkVersion to 37 and adapt our code to the implied changes.
Based on past experience, the Google Play Store deadline for this is likely 2027-08-31.

refs

• https://developer.android.com/about/versions/17/behavior-changes-17
• https://developer.android.com/about/versions/17/behavior-changes-all

The dynamic code loading change most likely affects us:

Safer Native DCL—C

If your app targets Android 17 (API level 37) or higher, the Safer Dynamic Code Loading (DCL) protection introduced in Android 14 for DEX and JAR files now extends to native libraries.

All native files loaded using System.load() must be marked as read-only. Otherwise, the system throws UnsatisfiedLinkError.