Bump sphinx-gallery from 0.10.1 to 0.11.0 in /requirements (#677)

Bumps [sphinx-gallery](https://github.com/sphinx-gallery/sphinx-gallery) from 0.10.1 to 0.11.0.
- [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@v0.10.1...v0.11.0)

---
updated-dependencies:
- dependency-name: sphinx-gallery
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

requirements/requirements_doc.txt

@@ -8,7 +8,7 @@ pytest-sphinx==0.4.0
 sphinx-autobuild==2021.3.14
 sphinx-autodoc-typehints==1.17.0
 sphinx-copybutton==0.5.0
-sphinx-gallery==0.10.1
+sphinx-gallery==0.11.0
 sphinx-notfound-page==0.8.3
 sphinxcontrib-websupport==1.2.4
 sphinxemoji==0.2.0