Security: Update @fastify/middie (CVE-2026-22031)

## Dependabot Alert

**Package:** `@fastify/middie`  
**CVE:** CVE-2026-22031  
**Summary:** Fastify Middie Middleware Path Bypass

## Action Required

Update `@fastify/middie` to a patched version to resolve the middleware path bypass vulnerability.

See: https://github.com/sandy-mount/sandy-mount.github.io/security/dependabot/1