Update roles

[ajnelson-nist]

Committer Notes

This PR updates the project metadata to reflect role updates.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you squashed any non-relevant commits and commit messages? [instructions]
• Do all automated CI/CD checks pass?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you included examples of how to use your new feature(s)?
• Have you updated all website and readme documentation affected by the changes you made?

[ajnelson-nist]

This PR is expected to pass CI before merging, but due to a currently pending account matter, will fail CI after merging.

[ajnelson-nist]

@david-waltermire , can you please review this and update as you see appropriate?

[david-waltermire]

I should be removed as "maintainer".

[ajnelson-nist]

I should be removed as "maintainer".

Change accepted with the GitHub interface.

[david-waltermire]

LGTM!