Update devops label spec after team member changes

Summary

Assignee Specs require an update due to team related changes

Related commit: gitlab-com/www-gitlab-com@97888b53

Action items

• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Week-in-review