chore(deps): update dependency rubocop-rails to v2.20.1

[renovate]

This PR contains the following updates:

Package	Update	Change
rubocop-rails (source, changelog)	minor	2.19.1 -> 2.20.1

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Release Notes

rubocop/rubocop-rails

v2.20.1

Compare Source

Bug fixes

• #​1021: Fix an error for Rails/UniqueValidationWithoutIndex. ([@​ydah][])

v2.20.0

Compare Source

New features

• #​999: Add autocorrection for Rails/Date. ([@​r7kamura][])
• #​991: Add autocorrection for Rails/FilePath. ([@​r7kamura][])
• #​988: Add autocorrection for Rails/IgnoredSkipActionFilterOption. ([@​r7kamura][])

Bug fixes

• #​1005: Flag break in with_lock for Rails/TransactionExitStatement. ([@​splattael][])
• #​997: Fix to Allow NotNullColumn to work with method calls and variables. ([@​fidalgo][])
• #​989: Fix Rails/FilePath to detect offenses from complex string interpolation. ([@​r7kamura][])
• #​1010: Fix Rails/ThreeStateBooleanColumn for dynamic tables/columns. ([@​fatkodima][])
• #​1008: Fix UniqueValidationWithoutIndex to not detect offenses when a validation specifies uniqueness: false. ([@​samrjenkins][])

Changes

• #​1011: Add *_create_active_storage_variant_records.active_storage.rb to Rails/CreateTableWithTimestamps exclude file list. ([@​tka5][])
• #​995: Check for or method in Rails/FindEach cop. ([@​masato-bkn][])
• #​1019: Change db migration file pattern so that it supports multiple db. ([@​r7kamura][])
• #​986: (Breaking) Drop Ruby 2.6 support. ([@​koic][])
• #​992: Exclude app/assets/**/* by default. ([@​r7kamura][])
• #​1014: Make Lint/RedundantSafeNavigation aware of presence and present? methods. ([@​koic][])
• #​1007: Support flash.now for Rails/I18nLocaleTexts. ([@​fatkodima][])

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