feat: add dockcheck update labels and fix Gotify service names

- Add mag37.dockcheck.update labels to audiobookshelf, caddy, gitea services
- Fix Gotify container names in Caddyfile routing
- Add explicit container names for gotify and igotify-assistant services
- Update Authentik to version 2025.6.3
- Fix environment variable format in gotify-compose template

🤖 Generated with [Claude Code](https://claude.ai/code)

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

roles/docker/templates/gitea-compose.yml.j2

@@ -20,6 +20,7 @@ services:
       glance.url: https://{{ subdomains.git }}/
       glance.description: Code repo
       glance.id: gitea
+      mag37.dockcheck.update: true
     volumes:
       - gitea:/data
       - /etc/timezone:/etc/timezone:ro
@@ -46,6 +47,7 @@ services:
     labels:
       glance.parent: gitea
       glance.name: Worker
+      mag37.dockcheck.update: true
     volumes:
       - ./runner-config.yaml:/config.yaml
       - ./data:/data