chore(deps): update dependency @types/supertest to v6

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
     "@types/proxyquire": "^1.3.31",
     "@types/sinon": "^17.0.2",
     "@types/sinon-chai": "^3.2.12",
-    "@types/supertest": "^2.0.16",
+    "@types/supertest": "^6.0.1",
     "@voxpelli/eslint-config": "^19.0.0",
     "@voxpelli/tsconfig": "^10.0.0",
     "c8": "^8.0.1",