Update dependency supertest to v7

Author: renovate[bot]

package-lock.json

@@ -50,7 +50,7 @@
     "jest-fetch-mock": "^3.0.3",
     "nock": "^13.5.5",
     "prettier": "2.8.8",
-    "supertest": "6.3.3",
+    "supertest": "7.1.4",
     "ts-jest": "29.1.3",
     "tslint": "6.1.3",
     "typescript": "5.1.6"