.rubocop.yml need an update

Created by: pustomytnyk

When I try to run the newest rubocop (0.53) it output two messages:

.rubocop.yml: Lint/ConditionPosition has the wrong namespace - should be Layout

Error: The `Style/TrailingCommaInLiteral` cop no longer exists. Please use `Style/TrailingCommaInArrayLiteral` and/or `Style/TrailingCommaInHashLiteral` instead.
(obsolete configuration found in .rubocop.yml, please update it)