Bump pydantic from 2.3.0 to 2.4.0 in /docs

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.3.0...v2.4.0)

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

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

Author: dependabot[bot]

docs/requirements.txt

@@ -8,6 +8,6 @@ aliyun-python-sdk-core-v3==2.13.11
 aliyun-python-sdk-core-v3
 oss2==2.14.0
 cos-python-sdk-v5==1.9.25
-pydantic===2.3.0
+pydantic===2.4.0
 SQLAlchemy===2.0.20
 tornado===6.3.3