The ingress was configured with ingressClassName: nginx, but the cluster
only has Traefik ingress controller installed. This caused the browser to
show Traefik's default certificate instead of the Let's Encrypt certificate.
Changed to ingressClassName: traefik to match all other ingresses in the
cluster (argocd, forgejo, directus, etc.)
Fixes: DEV-382
Co-Authored-By: Paperclip <noreply@paperclip.ing>
