Update dependency dev/sphinx to v7.4.5 (#239)

This PR contains the following updates:

| Package | Type | Update | Change | Pending |
|---|---|---|---|---|
| [dev/sphinx](https://github.com/sphinx-doc/sphinx)
([changelog](https://www.sphinx-doc.org/en/master/changes.html)) |
project.optional-dependencies | patch | `==7.4.4` -> `==7.4.5` | `7.4.7`
(+1) |

---

### Release Notes

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

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

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

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

## Bugs fixed

- [#&#8203;12593](https://github.com/sphinx-doc/sphinx/issues/12593),
[#&#8203;12600](https://github.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://github.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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pyproject.toml

@@ -29,7 +29,7 @@ optional-dependencies.dev = [
     "pytest-xdist==3.6.1",
     "pytest==8.3.1",
     "ruff==0.5.4",
-    "sphinx==7.4.4",
+    "sphinx==7.4.5",
     "types-ldap3==2.9.13.20240205",
     "types-pytz==2024.1.0.20240417",
     "types-requests==2.32.0.20240712",