deps: bump the sphinx-updates group with 2 updates

Bumps the sphinx-updates group with 2 updates: [docutils](https://github.com/rtfd/recommonmark) and [nbsphinx](https://github.com/spatialaudio/nbsphinx).


Updates `docutils` from 0.21.2 to 0.22.4
- [Changelog](https://github.com/readthedocs/recommonmark/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rtfd/recommonmark/commits)

Updates `nbsphinx` from 0.9.6 to 0.9.8
- [Release notes](https://github.com/spatialaudio/nbsphinx/releases)
- [Changelog](https://github.com/spatialaudio/nbsphinx/blob/master/NEWS.rst)
- [Commits](spatialaudio/nbsphinx@0.9.6...0.9.8)

---
updated-dependencies:
- dependency-name: docutils
  dependency-version: 0.22.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sphinx-updates
- dependency-name: nbsphinx
  dependency-version: 0.9.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: sphinx-updates
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -56,7 +56,7 @@ defusedxml==0.7.1
     #   nbconvert
 docstring-parser==0.17.0
     # via pyopenms_viz (pyproject.toml)
-docutils==0.21.2
+docutils==0.22.4
     # via
     #   nbsphinx
     #   pydata-sphinx-theme
@@ -127,7 +127,7 @@ nbformat==5.10.4
     #   nbclient
     #   nbconvert
     #   nbsphinx
-nbsphinx==0.9.6
+nbsphinx==0.9.8
     # via pyopenms_viz (pyproject.toml)
 nest-asyncio==1.6.0
     # via ipykernel

requirements.txt

@@ -56,7 +56,7 @@ defusedxml==0.7.1
     #   nbconvert
 docstring-parser==0.17.0
     # via pyopenms_viz (pyproject.toml)
-docutils==0.21.2
+docutils==0.22.4
     # via
     #   nbsphinx
     #   pydata-sphinx-theme