Bump @types/superagent from 4.1.2 to 4.1.4

Bumps [@types/superagent](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/superagent) from 4.1.2 to 4.1.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/superagent)

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

package.json

@@ -69,7 +69,7 @@
     "webpack-cli": "^3.3.5"
   },
   "dependencies": {
-    "@types/superagent": "^4.1.2",
+    "@types/superagent": "^4.1.4",
     "delay": "^4.3.0",
     "shortid": "^2.2.14",
     "superagent": "^5.1.0"