DOC: prepare 2.3.1 whatsnew notes for release #46032

Job	Run time
Test Conda Forge Recipe - Python 3.10	1s
Test Conda Forge Recipe - Python 3.11	1s
Install Extras - parquet	1s
Install Extras - hdf5	1s
Install Extras - feather	1s
Install Extras - test	1s
Install Extras - excel	1s
Install Extras - spss	1s
Install Extras - gcp	1s
Install Extras - sql-other	1s
Install Extras - computation	1s
Install Extras - plot	1s
Install Extras - xml	1s
Install Extras - all	1s
Install Extras - fss	1s
Install Extras - compression	1s
Install Extras - html	1s
Install Extras - output-formatting	1s
Install Extras - clipboard	1s
Install Extras - postgresql	1s
Install Extras - pyarrow	1s
Install Extras - mysql	1s
Install Extras - performance	1s
Install Extras - aws	1s
	24s

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