Bump sphinx-notfound-page from 1.0.0 to 1.0.4 in /requirements (#1673)

Bumps [sphinx-notfound-page](https://github.com/readthedocs/sphinx-notfound-page) from 1.0.0 to 1.0.4.
- [Changelog](https://github.com/readthedocs/sphinx-notfound-page/blob/main/CHANGELOG.rst)
- [Commits](readthedocs/sphinx-notfound-page@1.0.0...1.0.4)

---
updated-dependencies:
- dependency-name: sphinx-notfound-page
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/requirements_docs.txt

@@ -11,7 +11,7 @@ sphinx==7.1.0
 sphinx-autobuild==2024.2.4
 sphinx-copybutton==0.5.2
 sphinx-gallery==0.17.0
-sphinx-notfound-page==1.0.0
+sphinx-notfound-page==1.0.4
 sphinx-reredirects==0.1.3
 sphinx_design==0.6.0
 sphinxcontrib-napoleon==0.7