Support `violation_error_code` and `violation_error_message` from `UniqueConstraint` in `UniqueTogetherValidator`#9766

auvipy merged 3 commits intoencode:mainencode/django-rest-framework:mainfrom

s-aleshin:support-custom-error-unique-validators-aleshin/django-rest-framework:support-custom-error-unique-validatorCopy head branch name to clipboard