Bump pydata-sphinx-theme from 0.13.3 to 0.14.2 in /doc

Bumps [pydata-sphinx-theme](https://github.com/pydata/pydata-sphinx-theme) from 0.13.3 to 0.14.2.
- [Release notes](https://github.com/pydata/pydata-sphinx-theme/releases)
- [Commits](pydata/pydata-sphinx-theme@v0.13.3...v0.14.2)

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

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

doc/requirements.txt

@@ -1,6 +1,6 @@
 PyQt6==6.5.2
 sphinx==7.2.5
-pydata-sphinx-theme==0.13.3
+pydata-sphinx-theme==0.14.2
 sphinx-design==0.5.0
 sphinxcontrib-images==0.9.4
 sphinx-favicon==1.0.1