[rubygems/rubygems] Bump rake version used by tests
And make it easier to update next time.
https://github.com/rubygems/rubygems/commit/1ea4bfa5d8
[rubygems/rubygems] Bump rake version used by tests
And make it easier to update next time.
https://github.com/rubygems/rubygems/commit/1ea4bfa5d8