Bump pydata-sphinx-theme from 0.15.2 to 0.15.3 (#129)

Bumps [pydata-sphinx-theme](https://github.com/pydata/pydata-sphinx-theme) from 0.15.2 to 0.15.3.
- [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@v0.15.2...v0.15.3)

---
updated-dependencies:
- dependency-name: pydata-sphinx-theme
  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>

pyproject.toml

@@ -36,7 +36,7 @@ tests = [
     "numpy<1.27",
 ]
 docs = [
-    "pydata-sphinx-theme==0.15.2",
+    "pydata-sphinx-theme==0.15.3",
     "sphinx==7.3.7",
     "sphinx_copybutton==0.5.2",
     "sphinx-notfound-page==1.0.2",