Fix fixtures and failing spec

Context

Closes #1186 (closed)

The problem

Some categories got renamed:

• Category:Code Review became Category:Code Review Workflow
• Category:Editor Extension became Category:GitLab CLI

The fix

• Change the problematic spec to use new category labels
• Copy/paste the fixtures in triage-ops from
  • https://about.gitlab.com/categories.json
  • https://about.gitlab.com/groups.json
  • https://about.gitlab.com/sections.json
  • https://about.gitlab.com/stages.json

What does this MR do?

Fix the current broken master.

Try it out locally

git checkout master
rspec spec/lib/www_gitlab_com_spec.rb:26 spec/lib/devops_labels_spec.rb:804 --seed 64225
# Should fail

git checkout 1186-fix_broken_master # Not sure of the actual command to get the branch from the remote, maybe with `origin/` in front?
rspec spec/lib/www_gitlab_com_spec.rb:26 spec/lib/devops_labels_spec.rb:804 --seed 64225
# Should succeed 

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 =>
  • Engineering week-in-review