Correct the pubspec.yaml, we require 1.23.0 (#58)
Correct the pubspec.yaml, we require 1.23.0 (#58)

Closes https://github.com/dart-lang/http/issues/57.
dart-lang/http,donny-dont/http,dart-lang/http,dart-lang/http,dart-lang/http,dart-lang/http,dart-lang/http,dart-lang/http,dart-lang/http