Update SIG Contributor Experience Sub-project Owners

[mrbobbytables]

This is a general maintenance task. Before the 1.19 cycle / project planning starts we should ensure that the sub-project owners are up to date.

• Community
• Community-management
• Contributor Documentation
• Devstats
• Events
• GitHub Management
• k8s.io
• Mentoring
• Slack Infra

/assign @mrbobbytables @cblecker @nikhita @Phillels
/priority important-soon
/kind cleanup
/sig contributor-experience

[parispittman]

Checking in that I have intentions of remaining active in all of mine. I would like to be emeritus in the communication folder/community management subproject by EOY if I can get someone to mentor.

[mrbobbytables]

Just to update -- I have reached out to most subproject owners and should complete it this week with PRs to follow.