chore(deps): bump sphinx-notfound-page from 1.0.3 to 1.0.4 (#79)

Bumps [sphinx-notfound-page](https://github.com/readthedocs/sphinx-notfound-page) from 1.0.3 to 1.0.4.
- [Changelog](https://github.com/readthedocs/sphinx-notfound-page/blob/main/CHANGELOG.rst)
- [Commits](readthedocs/sphinx-notfound-page@1.0.3...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>

requirements.txt

@@ -8,6 +8,6 @@ sphinx-contributors==0.2.7
 sphinx-copybutton==0.5.2
 # sphinx-design==0.5.0
 sphinx-last-updated-by-git==0.3.7
-sphinx-notfound-page==1.0.3
+sphinx-notfound-page==1.0.4
 sphinx-tabs==3.4.5
 sphinx-togglebutton==0.3.2