bump busboy up to solve DoS vulnerability

[mrded]

Hello,

Snyk is reporting a vulnerability in this repo, that is coming from the Dicer library:

Issues with no direct upgrade or patch:
  ✗ Denial of Service (DoS) [High Severity][https://snyk.io/vuln/SNYK-JS-DICER-2311764] in dicer@0.2.5
    introduced by multer@1.4.4 > busboy@0.2.14 > dicer@0.2.5
  No upgrade or patch available

This change removes dicer from multer's transitive dependency list.

[mrded]

As expected, updating busboy 0.2.11 -> 1.0.0 breaks the tests, and need the code update.

[erano067]

Hey, I opened a pr for that that handle the breaking changes
I have another issues with busboy version. #1092

[mrded]

Closing due to a better solution available: #1097