v2 is bypassed - prioritise v3

Problem/Motivation

Issue 3050589 was closed with no real resolution.

https://github.com/ecthros/uncaptcha2 is now public, was released with Googles permission and has an 90%+ bypass rate for v2 reCaptcha which means that this is no longer effective.

Proposed resolution

Ditch v2 ehancements and focus all effort on getting a v3 reCaptcha release asap!

Remaining tasks

Release v3 reCaptcha

API changes

Should work with v3 reCaptcha keys and settings.