feat(directus): upgrade template to Directus 12.1.1

[markokosticdev]

Summary

• Upgrade directus/directus image from 11.12.0 to 12.1.1
• Add Directus service healthcheck using 127.0.0.1 (Directus binds IPv4 only; localhost resolves to ::1 and fails, which marks the container unhealthy and causes Traefik to skip routing)
• Add Directus 12 env vars: PUBLIC_URL, WEBSOCKETS_ENABLED, LICENSE_KEY
• Parameterize DB credentials (DB_USER, DB_NAME, DB_PASSWORD) and admin bootstrap credentials via template.toml
• Add local storage defaults with commented S3-compatible object storage block
• Update meta.json version and docs link

Test plan

• node build-scripts/generate-meta.js --check passes
• Import template Base64 from PR preview in Dokploy Compose → Advanced → Import
• Deploy and confirm container reaches healthy status
• Confirm HTTPS route works and Let's Encrypt cert is issued
• Log in with generated admin credentials

[github-actions]

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Name	Status	Preview	Last Commit
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