Fixed Addressable::URI#inspect to use self.class.

[postmodern]

This will allow sub-classing Addressable::URI and have the sub-classes name show up in the inspect output.

class CustomURL < Addressable::URI

  def custom_method
     ...
  end

end

uri = CustomURL.parse("https://example.com")
# => #<CustomURL:0x1824 URI:https://example.com>

[dentarg]

LGTM

# main
$ ruby -raddressable/uri -e 'class CustomURIClass < Addressable::URI;end; p CustomURIClass.new.inspect'
"#<Addressable::URI:0x3c URI:>"

# this PR
$ ruby -Ilib -raddressable/uri -e 'class CustomURIClass < Addressable::URI;end; p CustomURIClass.new.inspect'
"#<CustomURIClass:0x3c URI:>"

[dentarg]

Unfortunately merging is blocked by #543 – I can not resolve this myself

[postmodern]

Hmm, GitHub Actions suddenly sprung to life and ran on my work of addressable-uri. Only one job failed (macOS tests) with no output.
https://github.com/postmodern/addressable/actions/runs/10360606576/job/28679370905

[sporkmonger]

Should be unblocked now! Sorry I didn't see the problem earlier!