Please update dependencies

[ductranit]

Hi there,
Can you please update all dependencies to latest version?

  http: '>=0.12.0 <0.13.0'. => http: '^0.13.4'
  intl: '^0.16.1' => intl: '^0.17.0'
  meta: '^1.1.8' => meta: '^1.7.0'

I'm having few conflict issues when import mailslurp like this

Because every version of mailslurp depends on http ^0.12.0 and every version of my_app from git depends on http ^0.13.3, mailslurp is incompatible with my_app from git.

[ostk0069]

same problem here.

[Sereen-Kh]

any updates?