Bump pydata-sphinx-theme from 0.15.4 to 0.16.1 in the python group

Bumps the python group with 1 update: [pydata-sphinx-theme](https://github.com/pydata/pydata-sphinx-theme).


Updates `pydata-sphinx-theme` from 0.15.4 to 0.16.1
- [Release notes](https://github.com/pydata/pydata-sphinx-theme/releases)
- [Changelog](https://github.com/pydata/pydata-sphinx-theme/blob/main/RELEASE.md)
- [Commits](pydata/pydata-sphinx-theme@v0.15.4...v0.16.1)

---
updated-dependencies:
- dependency-name: pydata-sphinx-theme
  dependency-version: 0.16.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -19,7 +19,7 @@ classifiers = [
     "Topic :: Documentation :: Sphinx",
 ]
 dependencies = [
-    "pydata-sphinx-theme==0.15.4",
+    "pydata-sphinx-theme==0.16.1",
     "matplotlib",
     "sphinx-design",
 ]