v0.8.4

[cert-management]

🏃 Others

• [OPERATOR] Add command line flag --acme-deactivate-authorizations to enable deactivation of authorizations after a successful certificate request (#90, @MartinWeindel)
• [OPERATOR] Support for Kubernetes v1.22 (#89, @MartinWeindel)
• [OPERATOR] No panic on failed groupkind migration (#87, @MartinWeindel)