chore(deps-dev): bump @types/request-promise-native

Bumps [@types/request-promise-native](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/request-promise-native) from 1.0.20 to 1.0.21.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/request-promise-native)

---
updated-dependencies:
- dependency-name: "@types/request-promise-native"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -174,7 +174,7 @@
     "@types/nodemon": "1.19.4",
     "@types/pidusage": "2.0.4",
     "@types/plist": "3.0.4",
-    "@types/request-promise-native": "1.0.20",
+    "@types/request-promise-native": "1.0.21",
     "@types/require-all": "3.0.6",
     "@types/showdown": "2.0.3",
     "@types/supertest": "2.0.15",