Add pydantic-settings for python worker

[dreamhunter2333]

Now pydantic BaseSettings is move to pydantic-settings packages, please add it.

Uncaught Error: It appears that a package ("pydantic-settings") you requested is not available yet in workerd. 

  If you would like this package to be included, please open an issue at
  https://github.com/cloudflare/workerd/discussions/new?category=python-packages.
    at null.<anonymous> (pyodide-internal:setupPackages:179:11) in addPackageToLoad
    at null.<anonymous> (pyodide-internal:setupPackages:160:5) in recursiveDependencies
    at null.<anonymous> (pyodide-internal:setupPackages:117:24) in getTransitiveRequirements
    at null.<anonymous> (pyodide-internal:setupPackages:193:40)