build(deps): bump fastify from 5.8.4 to 5.8.5 in /backend

Bumps [fastify](https://github.com/fastify/fastify) from 5.8.4 to 5.8.5.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](https://github.com/fastify/fastify/compare/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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/package-lock.json

@@ -21,7 +21,7 @@
         "argon2": "^0.44.0",
         "dotenv": "^17.4.2",
         "drizzle-orm": "^0.45.2",
-        "fastify": "^5.8.4",
+        "fastify": "^5.8.5",
         "fastify-plugin": "^5.0.1",
         "jose": "^6.2.2",
         "nodemailer": "^8.0.5",
@@ -3186,9 +3186,9 @@
       "license": "BSD-3-Clause"
     },
     "node_modules/fastify": {
-      "version": "5.8.4",
-      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.8.4.tgz",
-      "integrity": "sha512-sa42J1xylbBAYUWALSBoyXKPDUvM3OoNOibIefA+Oha57FryXKKCZarA1iDntOCWp3O35voZLuDg2mdODXtPzQ==",
+      "version": "5.8.5",
+      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.8.5.tgz",
+      "integrity": "sha512-Yqptv59pQzPgQUSIm87hMqHJmdkb1+GPxdE6vW6FRyVE9G86mt7rOghitiU4JHRaTyDUk9pfeKmDeu70lAwM4Q==",
       "funding": [
         {
           "type": "github",

backend/package.json

@@ -30,7 +30,7 @@
     "argon2": "^0.44.0",
     "dotenv": "^17.4.2",
     "drizzle-orm": "^0.45.2",
-    "fastify": "^5.8.4",
+    "fastify": "^5.8.5",
     "fastify-plugin": "^5.0.1",
     "jose": "^6.2.2",
     "nodemailer": "^8.0.5",