www/ruby-faraday: update to 2.7.5

2.7.5 (2023-05-24)

What's Changed

* Subclass Options structs using a block by @bdewater in #1489
* Remove direct struct subclassing by @bdewater in #1491
* Fix incorrect use of logger middleware in docs by @mattbrictson in #1497
* Always assume the existence of URI::Generic#find_proxy by @yykamei in
  #1502
* Encode false to "false" in Faraday::Request::Json by @yykamei in #1504
* ProxyOptions should treat empty string as nil by @exoego in #1493

New Contributors

* @mattbrictson made their first contribution in #1497
* @exoego made their first contribution in #1493

(taca)