If you have used GitHub for more than a couple of years, you probably have an anonymous address that looks something like this: email@example.com. This prevents bots and spiders from picking up your address on commit history.
You may also use GnuPG to sign your commits, you may have noticed that your fancy Verified is now an ugly Unverified label on your new commits. It happened to me. 🙀
You are almost done. Go to SSH and GPG keys and update your key if necessary. At this point, any new commits should be Verified!
You don’t need to, but if you share signed files or e-mail, you may want to update the keyserver.