Update codeclimate to 0.85.2

Update codeclimate from 0.85.1 (released on 2019-03-29) to 0.85.2 (released on 2019-04-15).

To support Rubocop 0.67

• Diff: https://github.com/codeclimate/codeclimate/compare/v0.85.1...v0.85.2
• Changelogs:
  • https://github.com/codeclimate/codeclimate/releases/tag/v0.85.2

cf. #15 (closed) (!25 (merged))