fix: relax pydantic-core upper bound from <2.44.0 to <3

The pydantic-core<2.44.0 constraint was auto-generated by the Fern SDK
generator (fernapi/fern-python-sdk v5.3.3) in commit 7a070a7 and was not
based on any actual incompatibility. The SDK only uses stable pydantic-core
APIs (PydanticUndefined, core_schema, to_jsonable_python) that have been
unchanged across all 2.x releases.

This constraint caused a dependency conflict for users with pydantic>=2.13.3,
which requires pydantic-core==2.46.3, forcing them to downgrade to SDK v1.9.0.

The new constraint >=2.18.2,<3 allows all pydantic-core 2.x versions while
guarding against a hypothetical 3.0 breaking change.

Resolves: PRO-2816

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Vapi Tasker

poetry.lock

@@ -41,7 +41,7 @@ aiohttp = { version = ">=3.10.0,<4", optional = true}
 httpx = ">=0.21.2"
 httpx-aiohttp = { version = "0.1.8", optional = true}
 pydantic = ">= 1.9.2"
-pydantic-core = ">=2.18.2,<2.44.0"
+pydantic-core = ">=2.18.2,<3"
 typing_extensions = ">= 4.0.0"
 
 [tool.poetry.group.dev.dependencies]

pyproject.toml

@@ -1,4 +1,4 @@
 httpx>=0.21.2
 pydantic>= 1.9.2
-pydantic-core>=2.18.2,<2.44.0
+pydantic-core>=2.18.2,<3
 typing_extensions>= 4.0.0