build(deps): bump fastify from 5.7.4 to 5.8.1 in /backend (#669)

Bumps [fastify](https://github.com/fastify/fastify) from 5.7.4 to 5.8.1.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](https://github.com/fastify/fastify/compare/v5.7.4...v5.8.1)

---
updated-dependencies:
- dependency-name: fastify
  dependency-version: 5.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/package-lock.json

@@ -11,7 +11,7 @@
       "dependencies": {
         "@fastify/type-provider-typebox": "^6.1.0",
         "@types/nodemailer": "^7.0.11",
-        "fastify": "^5.7.4",
+        "fastify": "^5.8.1",
         "nodemailer": "^8.0.1",
         "ts-dotenv": "^0.9.1"
       },
@@ -6550,9 +6550,9 @@
       "license": "BSD-3-Clause"
     },
     "node_modules/fastify": {
-      "version": "5.7.4",
-      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.7.4.tgz",
-      "integrity": "sha512-e6l5NsRdaEP8rdD8VR0ErJASeyaRbzXYpmkrpr2SuvuMq6Si3lvsaVy5C+7gLanEkvjpMDzBXWE5HPeb/hgTxA==",
+      "version": "5.8.1",
+      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.8.1.tgz",
+      "integrity": "sha512-y0kicFvvn7CYWoPOVLOcvn4YyKQz03DIY7UxmyOy21/J8eXm09R+tmb+tVDBW5h+pja30cHI5dqUcSlvY86V2A==",
       "funding": [
         {
           "type": "github",
@@ -6574,7 +6574,7 @@
         "fast-json-stringify": "^6.0.0",
         "find-my-way": "^9.0.0",
         "light-my-request": "^6.0.0",
-        "pino": "^10.1.0",
+        "pino": "^9.14.0 || ^10.1.0",
         "process-warning": "^5.0.0",
         "rfdc": "^1.3.1",
         "secure-json-parse": "^4.0.0",

backend/package.json

@@ -31,7 +31,7 @@
   "dependencies": {
     "@fastify/type-provider-typebox": "^6.1.0",
     "@types/nodemailer": "^7.0.11",
-    "fastify": "^5.7.4",
+    "fastify": "^5.8.1",
     "nodemailer": "^8.0.1",
     "ts-dotenv": "^0.9.1"
   },