Bump @hono/zod-openapi from 0.16.4 to 0.18.0

Bumps [@hono/zod-openapi](https://github.com/honojs/middleware) from 0.16.4 to 0.18.0.
- [Release notes](https://github.com/honojs/middleware/releases)
- [Commits](https://github.com/honojs/middleware/compare/@hono/zod-openapi@0.16.4...@hono/zod-openapi@0.18.0)

---
updated-dependencies:
- dependency-name: "@hono/zod-openapi"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -31,7 +31,7 @@
   },
   "dependencies": {
     "@hono/swagger-ui": "^0.4.1",
-    "@hono/zod-openapi": "^0.14.9",
+    "@hono/zod-openapi": "^0.18.0",
     "hono": "^4.6.12",
     "octokit": "^4.0.2"
   },