chore(deps): update package versions in /website

- Bump version of developer-experience-portal from 2.2.0 to 2.2.1
- Update dependencies:
  - @easyops-cn/docusaurus-search-local from 0.52.2 to 0.55.0
  - mermaid from 10.9.5 to 11.12.3
  - react and react-dom from 18.3.1 to 19.2.4
  - @types/node from 20.19.33 to 25.3.0
  - Update other dependencies as necessary

This update ensures compatibility with the latest features and improvements.

Author: danbaruka