Update dependency furo to v2023.9.10

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
furo	2023.8.19 -> 2023.9.10

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Release Notes

pradyunsg/furo (furo)

### [`v2023.9.10`](https://togithub.com/pradyunsg/furo/compare/2023.08.19...2023.09.10) [Compare Source](https://togithub.com/pradyunsg/furo/compare/2023.08.19...2023.09.10)

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