chore: fix npm security vulnerabilities via audit fix

Resolves 6 vulnerabilities (4 high, 1 moderate, 1 low) in transitive
dependencies by running `npm audit fix`:

- hono <=4.12.3 (high): XSS, cache deception, IP spoofing, path traversal,
  cookie injection, SSE injection
- @hono/node-server <1.19.10 (high): authorization bypass via encoded slashes
- rollup 4.0.0-4.58.0 (high): arbitrary file write via path traversal
- minimatch <=3.1.3 (high): multiple ReDoS vulnerabilities
- ajv <8.18.0 (moderate): ReDoS when using $data option
- qs 6.7.0-6.14.1 (low): arrayLimit bypass denial of service

Author: jhamon