upgrade pydata-sphinx-theme to 0.16.1 (apache#2602)

Author: andygrove

docs/requirements.txt

@@ -18,7 +18,7 @@
 setuptools
 sphinx>=7.0,<8.0
 sphinx-reredirects
-pydata-sphinx-theme>=0.15.0,<0.16.0
+pydata-sphinx-theme>=0.16.1,<0.17.0
 myst-parser>=2.0,<4.0
 maturin
 jinja2