* update django.po file

* update django.po translators

* Changed the translation for the word “User” from “유저” to “사용자” to make it consistent with Django's translation

reference: https://github.com/django/django/blob/5a91ad3d7115c692d497663a155edee5ebc8989c/django/contrib/admin/locale/ko/LC_MESSAGES/django.po#L601

* Add missing translation for the word “Token"

* Fix wrong translation for word "Created"

* Fix translation for "Tokens", just like django translation.

reference: https://github.com/django/django/blob/5a91ad3d7115c692d497663a155edee5ebc8989c/django/contrib/auth/locale/ko/LC_MESSAGES/django.po#L235

* Add missing translation for "Invalid Input"

* Add missing translation for throttling messages

* Add missing translation for CharField, BooleanField messages

* fix: remove unnecessary space

* Feat: add missing translation for SlugField error message

* Feat: add missing translation for UUIDField error message

* Fix: add (boolean) for booleanField message

* Feat: add missing translation for `integer to float` error message

* Feat: add & fix translation for DecimalField

* Feat: add & fix translation for DateTimeField

* Feat: add & fix translation for DurationField

* Feat: add & fix translation for Selection&FilePathField

* Feat: add & fix translation for DictField

* Feat: add missing translation for filters

* Feat: add missing translations for template

* Feat: Change end punctuation to the “~세요.” used by Django translations

* update django.po translators

* Feat: add compiled message file

* Update rest_framework/locale/ko_KR/LC_MESSAGES/django.po

Co-authored-by: taezero <51291185+overtae@users.noreply.github.com>

* Update rest_framework/locale/ko_KR/LC_MESSAGES/django.po

Co-authored-by: taezero <51291185+overtae@users.noreply.github.com>

* Feat: remove unnecessary multliline from django.po(kor translation)

* Feat: remove unnecessary multliline from django.po(kor translation)

* Feat: update Korean translations for authentication messages

* Feat: Remove unnecessary English parenthesis descriptions

* Feat: Remove unnecessary English parenthesis descriptions

* Feat: Remove unnecessary English parenthesis descriptions

* Feat: Update compiled message file for ko_KR

---------

Co-authored-by: taezero <51291185+overtae@users.noreply.github.com>

…9681)

* Remove optional install backports.zoneinfo for unsupported Python versions and associated code

* Remove conditions in tests for unsupported Python versions

* Remove condition for unsupported Python versions

…9680)

* add drf-restwind

* Add images of 3rd party customization packages

* Add failing test for `UniqueConstraint` validation with `source` attribute

* Fix `UniqueTogetherValidator` to handle fields with source attribute

* split inner sources logic out to tuple comprehension

* Drop HTML line breaks on long headers

* Remove related test

* Fix flake8

---------

Co-authored-by: Asif Saif Uddin <auvipy@gmail.com>
Co-authored-by: Bruno Alla <alla.brunoo@gmail.com>

Replaced the outdated Heroku JSON Schema reference URL, which was returning a 404 error, with the updated working link from the official Heroku blog.

Co-authored-by: Bruno Alla <browniebroke@users.noreply.github.com>