build(deps-dev): bump @types/supertest from 2.0.16 to 6.0.1 (#599)

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
...

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

package.json

@@ -93,7 +93,7 @@
     "@types/random-string": "^0.0.31",
     "@types/ratelimiter": "^3.4.1",
     "@types/sinon": "^17.0.0",
-    "@types/supertest": "^2.0.11",
+    "@types/supertest": "^6.0.1",
     "@types/ultron": "^1.1.0",
     "@types/ws": "^8.2.0",
     "@typescript-eslint/eslint-plugin": "^6.0.0",