deps: bump the sphinx-updates group across 1 directory with 6 updates

Bumps the sphinx-updates group with 6 updates in the / directory:

| Package | From | To |
| --- | --- | --- |
| [docutils](https://github.com/rtfd/recommonmark) | `0.21.2` | `0.23` |
| [imagesize](https://github.com/shibukawa/imagesize_py) | `1.4.1` | `2.0.0` |
| [nbsphinx](https://github.com/spatialaudio/nbsphinx) | `0.9.6` | `0.9.8` |
| [pydata-sphinx-theme](https://github.com/pydata/pydata-sphinx-theme) | `0.16.1` | `0.19.0` |
| [snowballstemmer](https://github.com/snowballstem/snowball) | `3.0.1` | `3.1.1` |
| [sphinx-gallery](https://github.com/sphinx-gallery/sphinx-gallery) | `0.20.0` | `0.21.0` |



Updates `docutils` from 0.21.2 to 0.23
- [Changelog](https://github.com/readthedocs/recommonmark/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rtfd/recommonmark/commits)

Updates `imagesize` from 1.4.1 to 2.0.0
- [Commits](shibukawa/imagesize_py@1.4.1...2.0.0)

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)

Updates `pydata-sphinx-theme` from 0.16.1 to 0.19.0
- [Release notes](https://github.com/pydata/pydata-sphinx-theme/releases)
- [Changelog](https://github.com/pydata/pydata-sphinx-theme/blob/main/RELEASE.md)
- [Commits](pydata/pydata-sphinx-theme@v0.16.1...v0.19.0)

Updates `snowballstemmer` from 3.0.1 to 3.1.1
- [Changelog](https://github.com/snowballstem/snowball/blob/main/NEWS)
- [Commits](snowballstem/snowball@v3.0.1...v3.1.1)

Updates `sphinx-gallery` from 0.20.0 to 0.21.0
- [Release notes](https://github.com/sphinx-gallery/sphinx-gallery/releases)
- [Changelog](https://github.com/sphinx-gallery/sphinx-gallery/blob/master/CHANGES.rst)
- [Commits](sphinx-gallery/sphinx-gallery@v0.20.0...v0.21.0)

---
updated-dependencies:
- dependency-name: docutils
  dependency-version: '0.23'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sphinx-updates
- dependency-name: imagesize
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  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
- dependency-name: pydata-sphinx-theme
  dependency-version: 0.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sphinx-updates
- dependency-name: snowballstemmer
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sphinx-updates
- dependency-name: sphinx-gallery
  dependency-version: 0.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  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==0.23
     # via
     #   nbsphinx
     #   pydata-sphinx-theme
@@ -69,7 +69,7 @@ fonttools==4.63.0
     # via matplotlib
 idna==3.11
     # via requests
-imagesize==1.4.1
+imagesize==2.0.0
     # via sphinx
 iniconfig==2.3.0
     # via pytest
@@ -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
@@ -181,7 +181,7 @@ pure-eval==0.2.3
     # via stack-data
 pycparser==3.0
     # via cffi
-pydata-sphinx-theme==0.16.1
+pydata-sphinx-theme==0.19.0
     # via pyopenms_viz (pyproject.toml)
 pygments==2.19.2
     # via
@@ -227,7 +227,7 @@ rpds-py==0.30.0
     #   referencing
 six==1.17.0
     # via python-dateutil
-snowballstemmer==3.0.1
+snowballstemmer==3.1.1
     # via sphinx
 soupsieve==2.8.3
     # via beautifulsoup4
@@ -240,7 +240,7 @@ sphinx==8.1.3
     #   sphinx-gallery
 sphinx-copybutton==0.5.2
     # via pyopenms_viz (pyproject.toml)
-sphinx-gallery==0.20.0
+sphinx-gallery==0.21.0
     # via pyopenms_viz (pyproject.toml)
 sphinxcontrib-applehelp==2.0.0
     # via sphinx

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==0.23
     # via
     #   nbsphinx
     #   pydata-sphinx-theme
@@ -69,7 +69,7 @@ fonttools==4.63.0
     # via matplotlib
 idna==3.11
     # via requests
-imagesize==1.4.1
+imagesize==2.0.0
     # via sphinx
 iniconfig==2.3.0
     # via pytest
@@ -187,7 +187,7 @@ pure-eval==0.2.3
     # via stack-data
 pycparser==3.0
     # via cffi
-pydata-sphinx-theme==0.16.1
+pydata-sphinx-theme==0.19.0
     # via pyopenms_viz (pyproject.toml)
 pygments==2.19.2
     # via
@@ -237,7 +237,7 @@ rpds-py==0.30.0
     #   referencing
 six==1.17.0
     # via python-dateutil
-snowballstemmer==3.0.1
+snowballstemmer==3.1.1
     # via sphinx
 soupsieve==2.8.3
     # via beautifulsoup4
@@ -250,7 +250,7 @@ sphinx==9.0.4
     #   sphinx-gallery
 sphinx-copybutton==0.5.2
     # via pyopenms_viz (pyproject.toml)
-sphinx-gallery==0.20.0
+sphinx-gallery==0.21.0
     # via pyopenms_viz (pyproject.toml)
 sphinxcontrib-applehelp==2.0.0
     # via sphinx