build(deps): bump fastify from 5.8.4 to 5.8.5 in /src/order-service

Bumps [fastify](https://github.com/fastify/fastify) from 5.8.4 to 5.8.5.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](fastify/fastify@v5.8.4...v5.8.5)

---
updated-dependencies:
- dependency-name: fastify
  dependency-version: 5.8.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/order-service/package-lock.json

@@ -20,7 +20,7 @@
     "@fastify/autoload": "^6.3.1",
     "@fastify/cors": "^11.2.0",
     "@fastify/sensible": "^6.0.4",
-    "fastify": "^5.8.4",
+    "fastify": "^5.8.5",
     "fastify-cli": "^7.4.1",
     "fastify-plugin": "^5.1.0",
     "rhea": "^3.0.4"