Bump version of httpsnippet

[boxfoot]

Is your feature request related to a problem? Please describe.

A number of the snippets generated by httpsnippet have errors that have been fixed upstream by httpsnippet. Some of these are logged as separate issues on this repo. It would be helpful to bump to the latest httpsnippet to incorporate changes that they've fixed.

Describe the solution you'd like
Update dependency on httpsnippet from 1.22 (current) to 2.0 (requested)

Thank you!