Bump @types/node-fetch from 2.5.3 to 2.5.4 (#2328)

Bumps [@types/node-fetch](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node-fetch) from 2.5.3 to 2.5.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node-fetch)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -49,7 +49,7 @@
   "devDependencies": {
     "@types/mocha": "~5.2.7",
     "@types/node": "~10.11.0",
-    "@types/node-fetch": "^2.5.3",
+    "@types/node-fetch": "^2.5.4",
     "@types/rewire": "^2.5.28",
     "@types/semver": "^6.2.0",
     "mocha": "~5.2.0",