馃摑 docs(roles): Update DEI Advisor responsibilities
This commit reflects changes made in the HackMD pad by the DEI Team together in our 2023-10-26 meeting. This better captures what is expected of the Fedora DEI Advisor in the role. Notably, there are two larger changes to call out:
- The DEI Advisor becomes an appointed seat on the Fedora Code of Conduct Committee.
- The DEI Advisor is expected to be an Executive Sponsor of a Community Initiative at some point during their term as Advisor.
Contributes to home#20 (closed).