Bump ingress-nginx chart to 4.11.5
Chart version 4.11.5 contains ingress-nginx version v1.11.5.
Upgrading due to the vulnerability reported at
https://groups.google.com/g/kubernetes-security-announce/c/2qa9DFtN0cQ?pli=1
https: //github.com/advisories/GHSA-mgvx-rpfc-9mpv