Update Code of Conduct from v2 of Contributor Covenant to v3

[mmcelaney]

The Contributor Covenant version 3 wg just published the new version. https://www.contributor-covenant.org/version/3/0/code_of_conduct/

[EjiroOS]

@mmcelaney @marcelamelara has this issue been fixed? I was looking at updating it

[mmcelaney]

Looks like the CC is still version 2.0 here. We have a builder to help with updating to the most recent version here: https://www.contributor-covenant.org/adopt/

[marcelamelara]

@EjiroOS Please feel free to send a PR to get this updated. Thanks @mmcelaney for raising this issue.