feat(manifests): enable RBAC authorization in SaaS template

Flip --enable-authz from false to true now that the RBAC enforcement
middleware has landed (PR #1660). Already live-patched on hcmais.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: jsell-rh

components/manifests/templates/template-services.yaml

@@ -230,7 +230,7 @@ objects:
               - --db-password-file=/secrets/db/db.password
               - --db-name-file=/secrets/db/db.name
               - --enable-jwt=true
-              - --enable-authz=false
+              - --enable-authz=true
               - --jwk-cert-file=/configs/authentication/jwks.json
               - --enable-https=false
               - --enable-grpc=true