chore(deps): bump the python-deps group with 2 updates (#200)

Updates the requirements on [sphinx](https://github.com/sphinx-doc/sphinx) and [myst-parser](https://github.com/executablebooks/MyST-Parser) to permit the latest version.

Updates `sphinx` to 8.1.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.1.3/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.0.0...v8.1.3)

Updates `myst-parser` to 4.0.1
- [Release notes](https://github.com/executablebooks/MyST-Parser/releases)
- [Changelog](https://github.com/executablebooks/MyST-Parser/blob/master/CHANGELOG.md)
- [Commits](executablebooks/MyST-Parser@v4.0.0...v4.0.1)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-version: 8.1.3
  dependency-type: direct:production
  dependency-group: python-deps
- dependency-name: myst-parser
  dependency-version: 4.0.1
  dependency-type: direct:production
  dependency-group: python-deps
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -1,5 +1,5 @@
-sphinx>=8.0
-myst-parser>=4.0
+sphinx>=8.1.3
+myst-parser>=4.0.1
 sphinx-copybutton
 sphinx-autobuild
 furo