Bump pydantic from 2.12.0 to 2.12.3 in the python group

Bumps the python group with 1 update: [pydantic](https://github.com/pydantic/pydantic).


Updates `pydantic` from 2.12.0 to 2.12.3
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.12.0...v2.12.3)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-version: 2.12.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python
...

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

Author: dependabot[bot]

pyproject.toml

@@ -6,7 +6,7 @@ dependencies = [
     "click==8.3.0",
     "jinja2==3.1.6",
     "myst-parser==4.0.1",
-    "pydantic==2.12.0",
+    "pydantic==2.12.3",
     "requests==2.32.5",
     "sphinx-rtd-theme==3.0.2",
     "sphinx==8.2.3",