Backport PR #45757: DOC: move pydata-sphinx-theme to the conda packages section (#45760)

Co-authored-by: Simon Hawkins <[email protected]>

Author: meeseeksmachine

environment.yml

@@ -35,6 +35,7 @@ dependencies:
   - sphinx
   - sphinx-panels
   - numpydoc < 1.2  # 2021-02-09 1.2dev breaking CI
+  - pydata-sphinx-theme
   - types-python-dateutil
   - types-PyMySQL
   - types-pytz
@@ -120,6 +121,5 @@ dependencies:
   - tabulate>=0.8.3  # DataFrame.to_markdown
   - natsort  # DataFrame.sort_values
   - pip:
-    - pydata-sphinx-theme
     - pandas-dev-flaker==0.2.0
     - pytest-cython

requirements-dev.txt

@@ -21,6 +21,7 @@ gitdb
 sphinx
 sphinx-panels
 numpydoc < 1.2
+pydata-sphinx-theme
 types-python-dateutil
 types-PyMySQL
 types-pytz
@@ -83,7 +84,6 @@ cftime
 pyreadstat
 tabulate>=0.8.3
 natsort
-pydata-sphinx-theme
 pandas-dev-flaker==0.2.0
 pytest-cython
 setuptools>=51.0.0