Update maintainers list to more closely match with https://github.com/armadaproject/armada/blob/master/MAINTAINERS.md

[dave-gantenbein]

Pre-submission checklist for maintainer updates (delete this if you're updating a different file)

If you're adding a new maintainer to the CSV file, please review each of these actions as well:

• You've provided a link to documentation where the project has approved the maintainer change.
• The maintainer has also created or updated their LFX Individual Dashboard profile.
• You've also sent an email with the addresses to cncf-maintainer-changes@cncf.io for access to Service Desk and mailing lists.
• Optional: You've also sent a PR with affiliation updates to cncf/gitdm.

[krook]

Hi @dave-gantenbein we don't seem to have the email addresses for the newly added maintainers. Can you please send us their email addresses to cncf-maintainer-changes@cncf.io?

We ask that they be emailed to us as they aren't in this public spreadsheet by design, but we'll need them to send invites to Service Desk and the maintainer notification email list.