fix(traefik): upgrade fail2ban plugin to v0.9.0 and fix config schema

v0.7.1 caused 403 on all routes. v0.9.0 renamed whitelist→allowlist,
changed ip to a comma-separated string, and added enabled/statuscode fields.

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

traefik/compose.yml

@@ -24,7 +24,7 @@ services:
       - "--certificatesresolvers.resolver.acme.email=${ACME_EMAIL}"
       - "--certificatesresolvers.resolver.acme.storage=/letsencrypt/acme.json"
       - "--experimental.plugins.fail2ban.moduleName=github.com/tomMoulard/fail2ban"
-      - "--experimental.plugins.fail2ban.version=v0.7.1"
+      - "--experimental.plugins.fail2ban.version=v0.9.0"
     ports:
       - "80:80"
       - "443:443"