Fix Passbolt ingress class from nginx to traefik

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>

apps/passbolt/ingress.yaml

@@ -0,0 +1,24 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: passbolt-ingress
+  namespace: passbolt
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt-prod
+spec:
+  ingressClassName: traefik
+  rules:
+  - host: passbolt.basicstack.de
+    http:
+      paths:
+      - backend:
+          service:
+            name: passbolt
+            port:
+              number: 80
+        path: /
+        pathType: Prefix
+  tls:
+  - hosts:
+    - passbolt.basicstack.de
+    secretName: passbolt-tls