chore(uv): update pydantic requirement from >=2.13.3 to >=2.13.4

Updates the requirements on [pydantic](https://github.com/pydantic/pydantic) to permit the latest version.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/v2.13.4/HISTORY.md)
- [Commits](pydantic/pydantic@v2.13.3...v2.13.4)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-version: 2.13.4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "beartype>=0.22.9",
     "google-cloud-logging>=3.15.0",
     "jaxtyping>=0.3.9",
-    "pydantic>=2.13.3",
+    "pydantic>=2.13.4",
     "pydantic-settings>=2.14.0",
 ]