Log Message:
www/ruby-mechanize: update to 2.8.1

2.8.1 (2021-05-09)

Fix

* Gracefully handle parsing errors that contain an invalid byte sequence.
  Previously, if libxml2 registered a parsing error that itself contained
  invalid encoding, an exception might be raised. (#553)

2.8.0 (2021-04-01)

Requirements

* Mechanize now requires Ruby 2.5 or newer.
* Move from ntlm-http to rubyntlm gem. (#495, #574)

New Features

* Page::Link#uri now handles non-ASCII hrefs. (#569) @terryyin
* FileConnection supports Windows drive letters (#483)
* Credential headers 'Authorization' and 'Cookie' are deleted on
  cross-origin redirects. (#538) @kyoshidajp
* ContentDispositionParser handles ISO8601 date headers, to be robust with
  websites that ignore RFC2183. (#554) @reitermarkus

Bug fix

* POST headers 'Content-Length', 'Content-MD5', and 'Content-Type' are
  deleted in a case-insensitive manner on redirects.  Previously these
  headers were treated as case-sensitive.