build(deps): bump fastify from 5.6.2 to 5.7.1 in /backend (#617)

Bumps [fastify](https://github.com/fastify/fastify) from 5.6.2 to 5.7.1.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](https://github.com/fastify/fastify/compare/v5.6.2...v5.7.1)

---
updated-dependencies:
- dependency-name: fastify
  dependency-version: 5.7.1
  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

@@ -12,7 +12,7 @@
         "@fastify/type-provider-typebox": "^5.2.0",
         "@types/jest": "^30.0.0",
         "@types/nodemailer": "^7.0.5",
-        "fastify": "^5.6.2",
+        "fastify": "^5.7.1",
         "nodemailer": "^7.0.12",
         "ts-dotenv": "^0.9.1"
       },
@@ -1851,9 +1851,9 @@
       }
     },
     "node_modules/@fastify/ajv-compiler": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/@fastify/ajv-compiler/-/ajv-compiler-4.0.2.tgz",
-      "integrity": "sha512-Rkiu/8wIjpsf46Rr+Fitd3HRP+VsxUFDDeag0hs9L0ksfnwx2g7SPQQTFL0E8Qv+rfXzQOxBJnjUB9ITUDjfWQ==",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/@fastify/ajv-compiler/-/ajv-compiler-4.0.5.tgz",
+      "integrity": "sha512-KoWKW+MhvfTRWL4qrhUwAAZoaChluo0m0vbiJlGMt2GXvL4LVPQEjt8kSpHI3IBq5Rez8fg+XeH3cneztq+C7A==",
       "funding": [
         {
           "type": "github",
@@ -5986,9 +5986,9 @@
       }
     },
     "node_modules/fastify": {
-      "version": "5.6.2",
-      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.6.2.tgz",
-      "integrity": "sha512-dPugdGnsvYkBlENLhCgX8yhyGCsCPrpA8lFWbTNU428l+YOnLgYHR69hzV8HWPC79n536EqzqQtvhtdaCE0dKg==",
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.7.1.tgz",
+      "integrity": "sha512-ZW7S4fxlZhE+tYWVokFzjh+i56R+buYKNGhrVl6DtN8sxkyMEzpJnzvO8A/ZZrsg5w6X37u6I4EOQikYS5DXpA==",
       "funding": [
         {
           "type": "github",
@@ -6001,7 +6001,7 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "@fastify/ajv-compiler": "^4.0.0",
+        "@fastify/ajv-compiler": "^4.0.5",
         "@fastify/error": "^4.0.0",
         "@fastify/fast-json-stringify-compiler": "^5.0.0",
         "@fastify/proxy-addr": "^5.0.0",

backend/package.json

@@ -43,7 +43,7 @@
     "@fastify/type-provider-typebox": "^5.2.0",
     "@types/jest": "^30.0.0",
     "@types/nodemailer": "^7.0.5",
-    "fastify": "^5.6.2",
+    "fastify": "^5.7.1",
     "nodemailer": "^7.0.12",
     "ts-dotenv": "^0.9.1"
   },