chore(deps): update dependency sphinx to v7.4.5 (#773)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [sphinx](https://togithub.com/sphinx-doc/sphinx)
([changelog](https://www.sphinx-doc.org/en/master/changes.html)) |
`==7.4.4` -> `==7.4.5` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/sphinx/7.4.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/sphinx/7.4.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/sphinx/7.4.4/7.4.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/sphinx/7.4.4/7.4.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>sphinx-doc/sphinx (sphinx)</summary>

###
[`v7.4.5`](https://togithub.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-745-released-Jul-16-2024)

[Compare
Source](https://togithub.com/sphinx-doc/sphinx/compare/v7.4.4...v7.4.5)

\=====================================

## Bugs fixed

- [#&#8203;12593](https://togithub.com/sphinx-doc/sphinx/issues/12593),
[#&#8203;12600](https://togithub.com/sphinx-doc/sphinx/issues/12600):
Revert coercing the type of selected :confval:`html_sidebars`
    values to a list.
    Log an error message when string values are detected.
    Patch by Adam Turner.
- [#&#8203;12594](https://togithub.com/sphinx-doc/sphinx/issues/12594):
LaTeX: since 7.4.0, :rst:dir:`seealso` and other "light" admonitions
now break PDF builds if they contain a :dudir:`figure` directive; and
also
    if they are contained in a table cell (rendered by `tabulary`).
    Patch by Jean-François B.

</details>

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docs/requirements.txt

@@ -1,6 +1,6 @@
 myst-parser==3.0.1
 rstcheck==6.2.4
-sphinx==7.4.4
+sphinx==7.4.5
 nbsphinx==0.9.4
 sphinx-autobuild==2024.4.16
 sphinx-markdown-parser==0.2.4