ingress-nginx-app release v2.4.1

Internal change: Stop publishing nginx-ingress-controller-app to default catalog. (#235)
Disallow the controller Ingress to parse and add *-snippet annotations created by the user. This can be changed by setting controller.allowSnippetAnnotations to true. We recommend enabling this option only if you TRUST users with permission to create Ingress objects, as this may allow a user to add restricted configurations to the final nginx.conf file. This is a mitigation against CVE-2021-25742. (#238)