project-maintainers.csv: cert-manager has a new maintainer

[maelvls]

The vote took place in cert-manager/community#67.

Checklist for maintainer updates

• You've provided a link to documentation where the project has approved the maintainer changes -> Add hjoshi123 as maintainer cert-manager/community#67
• 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]

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[Copilot]

Pull request overview

Updates the CNCF project-maintainers.csv registry to reflect an approved cert-manager maintainer change (per linked community vote), keeping the maintainer roster current.

Changes:

• Add Hemant Joshi (Walmart, hjoshi123) as a cert-manager maintainer entry.
• Introduce an additional trailing empty line at the end of the CSV.

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