Backport PR #46605: DOC: 1.4.2 release date (#46607)

Co-authored-by: Simon Hawkins <simonjayhawkins@gmail.com>

doc/source/whatsnew/v1.4.2.rst

@@ -1,7 +1,7 @@
 .. _whatsnew_142:
 
-What's new in 1.4.2 (March ??, 2022)
-------------------------------------
+What's new in 1.4.2 (April 2, 2022)
+-----------------------------------
 
 These are the changes in pandas 1.4.2. See :ref:`release` for a full changelog
 including other versions of pandas.
@@ -22,6 +22,7 @@ Fixed regressions
 - Fixed regression in :meth:`DataFrame.replace` when the replacement value was explicitly ``None`` when passed in a dictionary to ``to_replace`` (:issue:`45601`, :issue:`45836`)
 - Fixed regression when setting values with :meth:`DataFrame.loc` losing :class:`MultiIndex` names if :class:`DataFrame`  was empty before (:issue:`46317`)
 - Fixed regression when rendering boolean datatype columns with :meth:`.Styler` (:issue:`46384`)
+- Fixed regression in :meth:`Groupby.rolling` with a frequency window that would raise a ``ValueError`` even if the datetimes within each group were monotonic (:issue:`46061`)
 
 .. ---------------------------------------------------------------------------
 
@@ -33,16 +34,6 @@ Bug fixes
 - Fixed "longtable" formatting in :meth:`.Styler.to_latex` when ``column_format`` is given in extended format (:issue:`46037`)
 - Fixed incorrect rendering in :meth:`.Styler.format` with ``hyperlinks="html"`` when the url contains a colon or other special characters (:issue:`46389`)
 - Improved error message in :class:`~pandas.core.window.Rolling` when ``window`` is a frequency and ``NaT`` is in the rolling axis (:issue:`46087`)
-- Fixed :meth:`Groupby.rolling` with a frequency window that would raise a ``ValueError`` even if the datetimes within each group were monotonic (:issue:`46061`)
-
-.. ---------------------------------------------------------------------------
-
-.. _whatsnew_142.other:
-
-Other
-~~~~~
--
--
 
 .. ---------------------------------------------------------------------------