chore(deps-dev): bump @types/supertest from 2.0.14 to 2.0.15

Bumps [@types/supertest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/supertest) from 2.0.14 to 2.0.15.
- [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-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

yarn.lock

@@ -1192,9 +1192,9 @@
     "@types/node" "*"
 
 "@types/supertest@^2.0.12":
-  version "2.0.14"
-  resolved "https://registry.yarnpkg.com/@types/supertest/-/supertest-2.0.14.tgz#e8fb6f6feed58a0dd5c2036227865dfa6ff7411d"
-  integrity sha512-Q900DeeHNFF3ZYYepf/EyJfZDA2JrnWLaSQ0YNV7+2GTo8IlJzauEnDGhya+hauncpBYTYGpVHwGdssJeAQ7eA==
+  version "2.0.15"
+  resolved "https://registry.yarnpkg.com/@types/supertest/-/supertest-2.0.15.tgz#3d032865048c84c6a3bbbf1f949145b917d2ff65"
+  integrity sha512-jUCZZ/TMcpGzoSaed9Gjr8HCf3HehExdibyw3OHHEL1als1KmyzcOZZH4MjbObI8TkWsEr7bc7gsW0WTDni+qQ==
   dependencies:
     "@types/superagent" "*"