DOC: move relevant whatsnew changes from 2.3.0 to 2.3.1 file#61698

jorisvandenbossche wants to merge 2 commits intopandas-dev:mainpandas-dev/pandas:mainfrom

jorisvandenbossche:doc-whatsnew-2.3.0-cleanupjorisvandenbossche/pandas:doc-whatsnew-2.3.0-cleanupCopy head branch name to clipboard