chore(deps): update dependency @types/ws to v7.4.7

Author: renovate[bot]

package-lock.json

@@ -62,7 +62,7 @@
     "@types/lodash": "4.14.170",
     "@types/node": "10.17.14",
     "@types/request": "2.48.4",
-    "@types/ws": "7.4.5",
+    "@types/ws": "7.4.7",
     "chai": "4.2.0",
     "eslint": "6.8.0",
     "mocha": "7.2.0",