Update dependency pydantic to v2.14.0a1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pydantic (changelog)	==2.13.4 → ==2.14.0a1

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Release Notes

pydantic/pydantic (pydantic)

v2.14.0a1

Compare Source

GitHub release

What's Changed

Packaging

• Add PyEmscripten platform tag support by @​Viicos, @​greateggsgreg and @​sinaatalay in #​13199:
  pydantic-core now has a 3.14 wheel published with the pyemscripten_2026_0 platform tag.
  Note that this wheel can only be used with Pyodide 314.0 and greater, still in development.
  It is recommended to wait for the final 314.0 release (and for Pydantic to publish a new wheel in a future 2.14 release).

Changes

• Accept None in MultiHostUrl.build()'s hosts parameter by @​Viicos in #​13068
• Drop support for Python 3.9 by @​Viicos in #​13070
• Remove support for eval_type_backport() by @​Viicos in #​13133
• Only deepcopy non-updated fields in model_copy() by @​connorcarpenter15 in #​13087

Fixes

• Add Mypy plugin workaround for dynamic models defined in functions by @​ilevkivskyi in #​13177
• Fallback to create_model() overload definition when __base__ is set to a type variable in the Mypy plugin by @​cyphercodes in #​13146

New Contributors

• @​ilevkivskyi made their first contribution in #​13177
• @​cyphercodes made their first contribution in #​13146
• @​connorcarpenter15 made their first contribution in #​13087

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