Update codeclimate to 0.85.8

Update codeclimate 0.85.6 (released on 2019-11-19) to 0.85.8 (released on 2020-02-01).

To support Rubocop 0.77/0.78/0.79:

• Diff: https://github.com/codeclimate/codeclimate/compare/v0.85.6...v0.85.8
• Changelogs:
  • https://github.com/codeclimate/codeclimate/releases/tag/v0.85.8

cf.

• #23 (closed) (!42 (merged))
• (!34 (merged))
• #19 (closed) (!28 (merged))
• #17 (closed) (!27 (merged))
• #15 (closed) (!25 (merged))