chore(deps-dev): bump prettier from 3.5.3 to 3.6.2 in /backend

Bumps [prettier](https://github.com/prettier/prettier) from 3.5.3 to 3.6.2.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.5.3...3.6.2)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.6.2
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

backend/package.json

@@ -94,7 +94,7 @@
         "eslint-plugin-prettier": "^5.5.4",
         "jest": "^29.7.0",
         "jest-junit": "^16.0.0",
-        "prettier": "^3.0.0",
+        "prettier": "^3.6.2",
         "source-map-support": "^0.5.21",
         "supertest": "^7.1.4",
         "ts-jest": "^29.4.4",

backend/yarn.lock

@@ -7687,10 +7687,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^3.0.0:
-  version "3.5.3"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.5.3.tgz#4fc2ce0d657e7a02e602549f053b239cb7dfe1b5"
-  integrity sha512-QQtaxnoDJeAkDvDKWCLiwIXkTgRhwYDEQCghU9Z6q03iyek/rxRh/2lC3HB7P8sWT2xC/y5JDctPLBIGzHKbhw==
+prettier@^3.6.2:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.6.2.tgz#ccda02a1003ebbb2bfda6f83a074978f608b9393"
+  integrity sha512-I7AIg5boAr5R0FFtJ6rCfD+LFsWHp81dolrFD8S79U9tb8Az2nGrJncnMSnys+bpQJfRUzqs9hnA81OAA3hCuQ==
 
 [email protected]:
   version "30.2.0"