chore(deps): Bump ws from 7.4.3 to 7.4.6 in /backend

Bumps [ws](https://github.com/websockets/ws) from 7.4.3 to 7.4.6.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/compare/7.4.3...7.4.6)

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

backend/package-lock.json

@@ -26,7 +26,7 @@
         "retry-axios": "^2.4.0",
         "sha256": "^0.2.0",
         "underscore": "^1.12.1",
-        "ws": "^7.4.3"
+        "ws": "^7.4.6"
       },
       "devDependencies": {
         "eslint": "^7.16.0",
@@ -3480,9 +3480,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "node_modules/ws": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.3.tgz",
-      "integrity": "sha512-hr6vCR76GsossIRsr8OLR9acVVm1jyfEWvhbNjtgPOrfvAlKzvyeg/P6r8RuDjRyrcQoPQT7K0DGEPc7Ae6jzA==",
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==",
       "engines": {
         "node": ">=8.3.0"
       },
@@ -6316,9 +6316,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.3.tgz",
-      "integrity": "sha512-hr6vCR76GsossIRsr8OLR9acVVm1jyfEWvhbNjtgPOrfvAlKzvyeg/P6r8RuDjRyrcQoPQT7K0DGEPc7Ae6jzA==",
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==",
       "requires": {}
     },
     "yallist": {

backend/package.json

@@ -32,7 +32,7 @@
     "retry-axios": "^2.4.0",
     "sha256": "^0.2.0",
     "underscore": "^1.12.1",
-    "ws": "^7.4.3"
+    "ws": "^7.4.6"
   },
   "devDependencies": {
     "eslint": "^7.16.0",