Bump pydantic-core from 2.16.3 to 2.18.4

Bumps [pydantic-core](https://github.com/pydantic/pydantic-core) from 2.16.3 to 2.18.4.
- [Release notes](https://github.com/pydantic/pydantic-core/releases)
- [Commits](pydantic/pydantic-core@v2.16.3...v2.18.4)

---
updated-dependencies:
- dependency-name: pydantic-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -48,7 +48,7 @@ packaging==24.0; python_version >= '3.7'
 pedantic==1.16.4; python_full_version >= '3.9.0'
 pycparser==2.22; python_version >= '3.8'
 pydantic==2.6.4; python_version >= '3.8'
-pydantic-core==2.16.3; python_version >= '3.8'
+pydantic-core==2.18.4; python_version >= '3.8'
 pygments==2.17.2; python_version >= '3.7'
 python-dotenv==1.0.1; python_version >= '3.8'
 python-redis-rate-limit==0.0.9