Update dependency @types/supertest to v2.0.11

Author: renovate-bot

package-lock.json

@@ -40,7 +40,7 @@
     "@types/jsonwebtoken": "8.5.1",
     "@types/lodash": "4.14.168",
     "@types/node": "14.14.37",
-    "@types/supertest": "2.0.10",
+    "@types/supertest": "2.0.11",
     "@types/ws": "7.4.0",
     "chance": "1.1.7",
     "cross-env": "7.0.3",