Update dependency @types/ws to v7.2.9

Author: renovate-bot

package-lock.json

@@ -41,7 +41,7 @@
     "@types/lodash": "4.14.162",
     "@types/node": "14.14.2",
     "@types/supertest": "2.0.10",
-    "@types/ws": "7.2.7",
+    "@types/ws": "7.2.9",
     "chance": "1.1.7",
     "cross-env": "7.0.2",
     "jest": "26.6.1",