Bump credo from 1.6.1 to 1.6.2

Bumps credo from 1.6.1 to 1.6.2.

Changelog

Sourced from credo's changelog.

1.6.2

• Bug fixes
• Add -i as shorthand for --ignore

Commits

• 6e87144 Bump version to 1.6.2
• a8dbc89 Update CHANGELOG
• 5f16f69 Fix failing test
• ce37d04 Fix #939
• add89bf remove unneeded assertion
• 6856b8b improve json key preparation
• c52b985 refactor: use inspect
• d953d64 rename sanitize/1 to prepare_for_json/1
• 8daf3a5 fix: sanitize map before converting to json
• 03303d1 Merge pull request #932 from TBK145/patch-1
• Additional commits viewable in compare view

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