Update to net6.0-android31.0

[poorankharol]

ONLY Post issues against Latest Beta!!!

Make sure you follow all of the setup directions before posting an issue: https://github.com/jamesmontemagno/MediaPlugin#important-permission-information

If you are creating an issue for a BUG please fill out this information. If you are asking a question or requesting a feature you can delete the sections below.

Failure to fill out this information will result in this issue being closed. If you post a full stack trace in a bug it will be closed, please post it to http://gist.github.com and then post the link here.

Bug Information

Version Number of Plugin: 6.0.2
Device Tested On:
Simulator Tested On:
Version of VS:
Version of Xamarin:
Versions of other things you are using:

Steps to reproduce the Behavior

Expected Behavior

Actual Behavior

Code snippet

Screenshots