Bump @types/supertest from 2.0.16 to 6.0.1 (#906)

Bumps [@types/supertest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/supertest) from 2.0.16 to 6.0.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/supertest)

---
updated-dependencies:
- dependency-name: "@types/supertest"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -87,7 +87,7 @@
     "@types/readable-stream": "4.0.10",
     "@types/split2": "4.2.3",
     "@types/strip-ansi": "5.2.1",
-    "@types/supertest": "2.0.16",
+    "@types/supertest": "6.0.1",
     "@typescript-eslint/eslint-plugin": "^6.15.0",
     "@typescript-eslint/parser": "^6.15.0",
     "concurrently": "^8.2.2",