Update dependency dev/sphinx to v7.4.4 (#236)

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 | `==7.4.0` -> `==7.4.4` | `7.4.7`
(+2) |

---

### Release Notes

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

###
[`v7.4.4`](https://github.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-744-released-Jul-15-2024)

[Compare
Source](https://github.com/sphinx-doc/sphinx/compare/v7.4.3...v7.4.4)

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

## Bugs fixed

- [#&#8203;12585](https://github.com/sphinx-doc/sphinx/issues/12585),
[#&#8203;12586](https://github.com/sphinx-doc/sphinx/issues/12586): Do
not warn when an intersphinx inventory contains
    case-insensitively ambiguous duplicate items.
    Patch by James Addison.

###
[`v7.4.3`](https://github.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-743-released-Jul-15-2024)

[Compare
Source](https://github.com/sphinx-doc/sphinx/compare/v7.4.2...v7.4.3)

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

## Bugs fixed

- [#&#8203;12582](https://github.com/sphinx-doc/sphinx/issues/12582):
Restore support for list-styled :confval:`source_suffix` values
    with extensions that register parsers.
    Patch by Adam Turner.

###
[`v7.4.2`](https://github.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-742-released-Jul-15-2024)

[Compare
Source](https://github.com/sphinx-doc/sphinx/compare/v7.4.1...v7.4.2)

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

## Bugs fixed

- [#&#8203;12580](https://github.com/sphinx-doc/sphinx/issues/12580),
[#&#8203;12583](https://github.com/sphinx-doc/sphinx/issues/12583):
Resolve failures with the C domain on incremental builds
    with Sphinx 7.3.7 and earlier.
    Patch by Adam Turner.

###
[`v7.4.1`](https://github.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-741-released-Jul-15-2024)

[Compare
Source](https://github.com/sphinx-doc/sphinx/compare/v7.4.0...v7.4.1)

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

## Bugs fixed

- Fix invalid HTML when a rubric node with invalid `heading-level` is
used.
    Patch by Adam Turner.
- [#&#8203;12579](https://github.com/sphinx-doc/sphinx/issues/12579),
[#&#8203;12581](https://github.com/sphinx-doc/sphinx/issues/12581):
Restore support for `typing.ParamSpec` in autodoc.
    Patch by Adam Turner.

</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==7.4.0",
+    "sphinx==7.4.4",
     "types-ldap3==2.9.13.20240205",
     "types-pytz==2024.1.0.20240417",
     "types-requests==2.32.0.20240712",