fix(deps): update dependency uvicorn to ^0.31.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
uvicorn (changelog)	^0.30.1 -> ^0.31.0

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Release Notes

encode/uvicorn (uvicorn)

v0.31.0

Compare Source

Added

Improve ProxyHeadersMiddleware (#​2468) and (#​2231):

• Fix the host for requests from clients running on the proxy server itself.
• Fallback to host that was already set for empty x-forwarded-for headers.
• Also allow to specify IP Networks as trusted hosts. This greatly simplifies deployments
  on docker swarm/kubernetes, where the reverse proxy might have a dynamic IP.
  • This includes support for IPv6 Address/Networks.

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