GHSA-7P79-6X2V-5H88 Server crash if running Python 3.10 w/ Sanic 20.12

!!! ONLY APPLIES TO VERSIONS PRIOR TO Sanic v20.12 WHEN USING Python 3.10 !!! Sanic v20.12 officially supports Python versions 3.6, 3.7, 3.8, and 3.9. However, if you accidentally run it with version 3.10 which is not supported by Sanic 20.12, your server is prone to crashing on an incoming web...