[rubygems/rubygems] Use dependency.identity in available_specs
https://github.com/rubygems/rubygems/commit/bde88f00a1
[rubygems/rubygems] Use dependency.identity in available_specs
https://github.com/rubygems/rubygems/commit/bde88f00a1