Bump sphinx-hoverxref from 1.3.0 to 1.4.0

Bumps [sphinx-hoverxref](https://github.com/readthedocs/sphinx-hoverxref) from 1.3.0 to 1.4.0.
- [Changelog](https://github.com/readthedocs/sphinx-hoverxref/blob/main/CHANGELOG.rst)
- [Commits](readthedocs/sphinx-hoverxref@1.3.0...1.4.0)

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

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

doc/requirements.txt

@@ -1,7 +1,7 @@
 docutils==0.20.1
 Sphinx==7.2.6
 sphinx-copybutton==0.5.2
-sphinx-hoverxref==1.3.0
+sphinx-hoverxref==1.4.0
 sphinxext-opengraph==0.9.0
 pydata-sphinx-theme==0.14.4
 sphinx-autodoc-typehints==1.25.2