Log Message:
www/ruby-faraday: update to 0.17.3

Update ruby-faraday to 0.17.3.  This is not latest version of faraday but
www/ruby-faraday_middleware require prior to 1.0.

## v0.17.3

Fixes:

* Reverts changes in error classes hierarchy. #1092 (@iMacTia)
* Fix Ruby 1.9 syntax errors and improve Error class testing #1094 (@BanzaiMan,
  @mrexox, @technoweenie)

Misc:

* Stops using `&Proc.new` for block forwarding. #1083 (@olleolleolle)
* Update CI to test against ruby 2.0-2.7 #1087, #1099 (@iMacTia, @olleolleolle,
  @technoweenie)
* require FARADAY_DEPRECATE=warn to show Faraday v1.0 deprecation warnings
  #1098 (@technoweenie)

## v0.17.1

Final release before Faraday v1.0, with important fixes for Ruby 2.7.

Fixes:

* RaiseError response middleware raises exception if HTTP client returns a nil
  status. (#1042)

Misc:

* Fix Ruby 2.7 warnings (#1009)
* Add `Faraday::Deprecate` to warn about upcoming v1.0 changes. (#1054, #1059,
    #1076, #1077)
* Add release notes up to current in CHANGELOG.md (#1066)
* Port minimal rspec suite from main branch to run backported tests. (#1058)

## v0.17.0

This release is the same as v0.15.4. It was pushed to cover up releases
v0.16.0-v0.16.2.

## v0.15.4

* Expose `pool_size` as a option for the NetHttpPersistent adapter (#834)