chore: Bump pydantic from 2.13.3 to 2.13.4

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.13.3 to 2.13.4.
- [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:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -18,7 +18,7 @@ Homepage = "https://fable.io"
 dev = [
     "pytest>=9.0.3,<10",
     "ruff>=0.15.12",
-    "pydantic>=2.13.3",
+    "pydantic>=2.13.4",
     "httpx>=0.28.1",
     "fastapi>=0.136.1",
 ]
@@ -32,7 +32,7 @@ django = [
 ]
 fastapi = [
     "fastapi>=0.136.1",
-    "pydantic>=2.13.3",
+    "pydantic>=2.13.4",
     "uvicorn[standard]>=0.46.0",
 ]