chore(deps): update dependency supertest to v6.1.5

Author: renovate-bot

package-lock.json

@@ -41,7 +41,7 @@
     "reflect-metadata": "0.1.13",
     "release-it": "14.11.3",
     "rxjs": "7.3.0",
-    "supertest": "6.1.4",
+    "supertest": "6.1.5",
     "ts-jest": "27.0.4",
     "ts-node": "10.2.0",
     "typescript": "4.3.5"