I'm trying to retire an email address, and changed the email for my github account, then reconnected github for cumulusCI, but the admin-email hasn't changed.
Anyone know how to change it?
I'm not 100% certain but it might be your local git configuration, unless you've defined the email_address property in your scratch org config file.
If you type this command, does it show your old email address?
git config user.email
If so, to change it type:
git config user.email "your@emailhere.com"
To apply the change across all git projects, use --global:
git config --global user.email "your@emailhere.com"
Reference:
https://docs.github.com/en/account-and-profile/how-tos/email-preferences/setting-your-commit-email-address