chore(all): bump fastify from 5.7.1 to 5.7.4

Bumps [fastify](https://github.com/fastify/fastify) from 5.7.1 to 5.7.4.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](fastify/fastify@v5.7.1...v5.7.4)

---
updated-dependencies:
- dependency-name: fastify
  dependency-version: 5.7.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -37,7 +37,7 @@
     "ajv-formats": "^3.0.1",
     "arctic": "^3.7.0",
     "drizzle-orm": "^0.45.1",
-    "fastify": "^5.7.1",
+    "fastify": "^5.7.4",
     "fastify-favicon": "^5.0.0",
     "lucia": "^3.2.2",
     "nanoid": "^5.1.6",

services/backend/package.json

@@ -20,7 +20,7 @@
     "@modelcontextprotocol/sdk": "^1.25.3",
     "@octokit/rest": "^22.0.1",
     "dotenv": "^17.2.3",
-    "fastify": "^5.7.1",
+    "fastify": "^5.7.4",
     "fuse.js": "^7.1.0",
     "gpt-tokenizer": "^3.4.0",
     "pino": "^10.3.0",