build(deps-dev): bump prettier in /apps/OpenSignServer

Bumps [prettier](https://github.com/prettier/prettier) from 3.5.0 to 3.5.3.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/3.5.0...3.5.3)

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

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

apps/OpenSignServer/package.json

@@ -57,7 +57,7 @@
     "mongodb-runner": "^5.7.1",
     "nodemon": "^3.1.9",
     "nyc": "^17.1.0",
-    "prettier": "^3.5.0"
+    "prettier": "^3.5.3"
   },
   "overrides": {
     "ws": "$ws",