Add django-pydantic-field and drf-pydantic to third-party packages do…

[Natgho]

docs: add Pydantic integration packages to serializers documentation

• Add django-pydantic-field for Django JSONField Pydantic support
• Add drf-pydantic for DRF Pydantic integration

#9873

[Copilot]

Pull request overview

This PR adds two Pydantic integration packages — django-pydantic-field and drf-pydantic — to the Django REST Framework documentation. Both packages bridge Pydantic with DRF: one for using Pydantic models as schemas for Django's JSONField, and the other for full DRF serializer/validation integration.

Changes:

• Add django-pydantic-field and drf-pydantic to the Serializers section of third-party-packages.md, with link references.
• Add a dedicated "DRF Pydantic" section with a description and link reference for drf-pydantic in serializers.md.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
docs/community/third-party-packages.md	Adds bullet entries and link references for both django-pydantic-field and drf-pydantic in the Serializers section.
docs/api-guide/serializers.md	Adds a "DRF Pydantic" section entry and link reference for drf-pydantic only.

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One issue was identified:

The PR description explicitly calls out both packages for inclusion, and drf-pydantic receives a full section in docs/api-guide/serializers.md. However, django-pydantic-field — whose description even highlights its "integration with Django REST Framework" — is not given a corresponding entry in serializers.md. This is an inconsistency between the PR description intent and the actual changes.

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