Update codeclimate to 0.85.15

What does this MR do?

Updates upstream CodeClimate from 0.85.10 to 0.85.15.

To support Rubocop 0.84/0.85/0.86/0.87/0.88 and ESLint 7:

• Diff: https://github.com/codeclimate/codeclimate/compare/v0.85.10...v0.85.15
• Changelogs:
  • https://github.com/codeclimate/codeclimate/releases/tag/v0.85.15

What are the relevant issue numbers?

Closes #17 (closed)

• !16 (merged) (0.85.10)
• gitlab-org/security-products/codequality!47 (merged) (0.85.9)
• gitlab-org/security-products/codequality!45 (merged) (0.85.8)
• gitlab-org/security-products/codequality#23 (closed) (gitlab-org/security-products/codequality!42 (merged))
• (gitlab-org/security-products/codequality!34 (merged))
• gitlab-org/security-products/codequality#19 (closed) (gitlab-org/security-products/codequality!28 (merged))
• gitlab-org/security-products/codequality#17 (closed) (gitlab-org/security-products/codequality!27 (merged))
• gitlab-org/security-products/codequality#15 (closed) (gitlab-org/security-products/codequality!25 (merged))

cc @drewcimino @iamricecake @morefice