build(deps): bump ws from 8.20.0 to 8.20.1 in /backend (#641)

Bumps [ws](https://github.com/websockets/ws) from 8.20.0 to 8.20.1.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/compare/8.20.0...8.20.1)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 8.20.1
  dependency-type: indirect
...

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backend/package-lock.json

@@ -5301,9 +5301,9 @@
       "license": "ISC"
     },
     "node_modules/ws": {
-      "version": "8.20.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
-      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
+      "version": "8.20.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.1.tgz",
+      "integrity": "sha512-It4dO0K5v//JtTXuPkfEOaI3uUN87iYPnqo/ZzqCoG3g8uhA66QUMs/SrM0YK7/NAu+r4LMh/9dq2A7k+rHs+w==",
       "license": "MIT",
       "engines": {
         "node": ">=10.0.0"