Bump multer from 1.3.1 to 1.4.1

Bumps [multer](https://github.com/expressjs/multer) from 1.3.1 to 1.4.1.
- [Release notes](https://github.com/expressjs/multer/releases)
- [Changelog](https://github.com/expressjs/multer/blob/master/CHANGELOG.md)
- [Commits](expressjs/multer@v1.3.1...v1.4.1)

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

Author: dependabot-support

package-lock.json

@@ -28,7 +28,7 @@
     "jsonwebtoken": "^8.1.0",
     "memory-cache": "^0.2.0",
     "mongoose": "^5.1.0",
-    "multer": "^1.3.1",
+    "multer": "^1.4.1",
     "passport": "^0.4.0",
     "passport-local": "^1.0.0",
     "q": "^1.5.1",