Revert "Merge branch 'ddieulivol-k8s_upgrade_to_1.27' into 'master'"

What does this MR do and why?

Revert "Merge branch 'ddieulivol-k8s_upgrade_to_1.27' into 'master'"

This reverts merge request !2801 (merged) to fix deploy:secrets and deploy:triage-web jobs in the master pipeline.

Action items

• If adding environment variables for reactive processors, update config/triage-web.yaml and .gitlab/ci/triage-web.yml
• (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