Cookie printing and security fixes

• Updated HTTPclient to 0.0.6, which allows printing of all cookies that are in the request.
  • Relates to Hi-Fi/httpclient#15, thanks to
• Fixed multiple security issues in dependencies: #54, #55, #56, #57, #58, #59, #60

Example of printing out all cookies:

    Create Session  google  http://www.google.com
    ${resp}=  Get Request  google  /
    Log    ${resp.cookies}