Update Longhorn maintainer

[innobead]

Checklist for maintainer updates

Note

Delete this template if you're not changing the CSV file

• You've provided a link to documentation where the project has approved the maintainer changes.
  https://github.com/longhorn/longhorn/blob/master/MAINTAINERS#L11-L12
• The maintainer(s) also created or updated their LFX Individual Dashboard profile.
• You've sent an email with the list of email address(es) to cncf-maintainer-changes@cncf.io for invitations to Service Desk and mailing lists. You can just mark this complete if you are only removing people.
• Optional: You've also sent a PR with affiliation updates to cncf/gitdm.

[netlify]

✅ Deploy Preview for cncf-license-exceptions canceled.

Name	Link
🔨 Latest commit	25d10ab
🔍 Latest deploy log	https://app.netlify.com/projects/cncf-license-exceptions/deploys/6aaa660ed53dde0008b8d351

[riaankleinhans]

@innobead thank you for this PR.
We are going to automate the update of this file this week.
The information would be pulled from the project's own .project repo: https://github.com/longhorn/.project/blob/main/maintainers.yaml#L10-L19

Can you please update the maintainers in that file. This would automatically give maintainers access to CNCF services desk and the project's maintainers mailing list.

Going forward the file in the repo does not have to be maintainer by projects.