chore(deps): update dependency supertest to v6.1.0

Author: renovate-bot

package-lock.json

@@ -42,7 +42,7 @@
     "release-it": "14.2.2",
     "rxjs": "6.6.3",
     "rxjs-compat": "6.6.3",
-    "supertest": "6.0.1",
+    "supertest": "6.1.0",
     "ts-jest": "26.4.4",
     "ts-node": "9.1.1",
     "typescript": "4.1.3"