deps: bump furo to 2024.1.29

[airwoodix]

Update furo from 2023.8.19 to 2024.1.29. Resolves #567.

[CLAassistant]

All committers have signed the CLA.

[airwoodix]

@Eric-Arellano would you have hints whether bumping the version is sufficient? It'd be nice to get a dependency on a non-yanked furo release released, since stricter resolvers, e.g. uv, treat yanked releases as incompatible, making it cumbersome to install qiskit-sphinx-theme (works with an override but is not convenient). Thanks!

[Eric-Arellano]

Hey @airwoodix, pardon the delay on this and thank you for taking the initiative with creating this PR. I appreciate it!

This looks good and you followed the correct process at

qiskit_sphinx_theme/CONTRIBUTING.md

Lines 146 to 149 in d916732

	### How to update the Furo version
	Update the version in `pyproject.toml`. Always pin to an exact version of Furo.
	However, when updating, closely analyze each commit in the release to check for any changes that would break our fork. We want to make sure that our HTML files are always in sync with Furo. If they have made any changes, then add them back to our copy of the file.

We're not ready for a 2.0 release because it makes some breaking changes we haven't finished. So I will make a 1.16 patch release with this cherry-picked.

[Eric-Arellano]

@airwoodix qiskit-sphinx-theme 1.16.1 is released. Thanks again for your help!

[airwoodix]

Thanks for the merge and the extra release! Glad to see that a newer furo release works fine too.