Resolve "[CI] Test Operator against Kubernetes (GKE) 1.22"

Pre-requisites for merge

• 1.22 cluster has been provisioned
• Added KUBECONFIG_GKE122 to projects
  • project @ gitlab.com
  • project @ dev.gitlab.org
    • use kubeconfig for gitlab-operator-dev-v122 cluster from 1Password
    • override DOMAIN_GKE122 in dev.gitlab.org with gitlab-operator-dev-v122.k8s-ft.win

Acceptance criteria

• Added 1.22 jobs to pipeline
• pipeline is green (which implies that jobs in 1.22 ran successfully)

Related issues

Closes #478 (closed)