Bump the dependencies group with 2 updates (#497)

Bumps the dependencies group with 2 updates: [sphinx-gallery](https://github.com/sphinx-gallery/sphinx-gallery) and [matplotlib](https://github.com/matplotlib/matplotlib).


Updates `sphinx-gallery` from 0.17.0 to 0.17.1
- [Release notes](https://github.com/sphinx-gallery/sphinx-gallery/releases)
- [Changelog](https://github.com/sphinx-gallery/sphinx-gallery/blob/master/.github_changelog_generator)
- [Commits](sphinx-gallery/sphinx-gallery@v0.17.0...v0.17.1)

Updates `matplotlib` from 3.9.1 to 3.9.1.post1
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.9.1...v3.9.1.post1)

---
updated-dependencies:
- dependency-name: sphinx-gallery
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: matplotlib
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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