Resolve latest version via gem contents

[dnrce]

Description:

Issue

Scenario: I have two versions of gem foo installed.
Current behavior: gem contents foo returns information about the older version.
Expected behavior: gem contents foo returns information about the newer version.

---

Tasks:

• Describe the problem / feature
• Write tests
• Write code to solve the problem
• Get code review from coworkers / friends

I will abide by the code of conduct.

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[deivid-rodriguez]

Looks great, thanks for fixing this! 💜

[bronzdoc]

@bundlerbot merge

[ghost]

Build succeeded

• install (2.3.8)
• install (2.4.9)
• install (2.5.7)
• install (2.6.5)
• install (jruby-9.2.9.0)
• macos (2.4.9)
• macos (2.5.7)
• macos (2.6.5)
• ubuntu (2.3.8, rubygems)
• ubuntu (2.4.9, bundler)
• ubuntu (2.4.9, rubygems)
• ubuntu (2.5.7, bundler)
• ubuntu (2.5.7, rubygems)
• ubuntu (2.6.5, bundler)
• ubuntu (2.6.5, rubygems)
• ubuntu_bundler_master (2.6.5)
• ubuntu (jruby-9.2.9.0, rubygems)
• ubuntu_lint
• unstable (ruby-head)
• windows (2.4.9)
• windows (2.5.7)
• windows (2.6.5)

[dnrce]

Thanks, all, for the review!