chore(deps): update dependency sinon to v7.4.1

Author: renovate-bot

package-lock.json

@@ -122,7 +122,7 @@
     "nyc": "14.1.1",
     "prettier": "1.18.2",
     "promise.series": "0.2.0",
-    "sinon": "7.3.2",
+    "sinon": "7.4.1",
     "sinon-chai": "3.3.0",
     "socket.io-client": "2.2.0",
     "supertest": "4.0.2",