Bump request-promise from 4.2.2 to 4.2.4 (desktop#205)

Bumps [request-promise](https://github.com/request/request-promise) from 4.2.2 to 4.2.4.
- [Release notes](https://github.com/request/request-promise/releases)
- [Commits](request/request-promise@v4.2.2...v4.2.4)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -31,7 +31,7 @@
     "@types/yaml": "^1.0.2",
     "prettier": "^1.16.4",
     "request": "^2.88.0",
-    "request-promise": "^4.2.2",
+    "request-promise": "^4.2.4",
     "semver": "^5.6.0",
     "typescript": "^3.3.3",
     "yaml": "^1.3.2"