Upgrade formidable to parse multipart form arrays

[s4kh]

• [x] Used appropriate template for the issue type
• [x] Searched both open and closed issues for duplicates of this issue

Restify Version

8.4.1

Expected behaviour

New version of formidable parses arrays correctly https://github.com/node-formidable/node-formidable/issues/33#issuecomment-569480566

Actual behaviour

Now it uses old version which does not follow standard convention for Arrays

[VictorJozwicki]

After parsing files is still an object. Is this correct behaviour ?