Eleven: replace RenderScript with RenderEffect

Since Android 12 (S) RenderScript is deprecated and alternative
solutions should be used.

As no backports exist for RenderEffect, we need to check if the
app is running on S or later and disable blur for < 31.

Bump the app version to 4.1.0 to indicate we have bigger changes
than usual.

Change-Id: I9b32ccf131dcd953b9d7fdf073da799cce607420
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>