upgrade to the latest version of PyData Sphinx Theme (#60430)

* upgrade to the latest version of PyData Sphinx Theme

upgrade PyData Sphinx Theme from 0.14 to the latest 0.16

it is needed to get the latest font-awesome pack to be able to display the new twitter-x icon.

https://github.com/pandas-dev/pandas/pull/60426

* update pydata-sphinx-theme to version 0.16

update pydata-sphinx-theme to version 0.16 and synchronize with environment.yml

environment.yml

@@ -87,7 +87,7 @@ dependencies:
   - google-auth
   - natsort  # DataFrame.sort_values doctest
   - numpydoc
-  - pydata-sphinx-theme=0.14
+  - pydata-sphinx-theme=0.16
   - pytest-cython  # doctest
   - sphinx
   - sphinx-design

requirements-dev.txt

@@ -62,7 +62,7 @@ gitdb
 google-auth
 natsort
 numpydoc
-pydata-sphinx-theme==0.14
+pydata-sphinx-theme==0.16
 pytest-cython
 sphinx
 sphinx-design