Update Mojolicious to 7.66

• This release contains fixes for security issues, everybody should upgrade!
• Removed origin attribute of Mojo::Cookie::Response.
• Removed deprecated data and remaining methods from Mojo::IOLoop::Delay.
• Added host_only attribute to Mojo::Cookie::Response.
• Improved all method in Mojo::Promise to resolve with no results if no promises have been passed.
• Fixed a bug in Mojo::UserAgent::CookieJar where old cookies could be leaked. (exp-innit, sri)

MFH: 2018Q1 (along with every update since the branch point)
Security: https://github.com/kraih/mojo/issues/1185