Backport PR pandas-dev#54051 on branch 2.0.x (DOC: Add whatsnew for 2.0.4) (pandas-dev#54053)

Backport PR pandas-dev#54051: DOC: Add whatsnew for 2.0.4

Co-authored-by: Thomas Li <[email protected]>

Author: meeseeksmachine

doc/source/whatsnew/index.rst

@@ -16,6 +16,7 @@ Version 2.0
 .. toctree::
    :maxdepth: 2
 
+   v2.0.4
    v2.0.3
    v2.0.2
    v2.0.1

doc/source/whatsnew/v2.0.3.rst

@@ -43,4 +43,4 @@ Other
 Contributors
 ~~~~~~~~~~~~
 
-.. contributors:: v2.0.2..v2.0.3|HEAD
+.. contributors:: v2.0.2..v2.0.3

doc/source/whatsnew/v2.0.4.rst

@@ -0,0 +1,41 @@
+.. _whatsnew_204:
+
+What's new in 2.0.4 (August ??, 2023)
+---------------------------------------
+
+These are the changes in pandas 2.0.4. See :ref:`release` for a full changelog
+including other versions of pandas.
+
+{{ header }}
+
+.. ---------------------------------------------------------------------------
+.. _whatsnew_204.regressions:
+
+Fixed regressions
+~~~~~~~~~~~~~~~~~
+-
+-
+
+.. ---------------------------------------------------------------------------
+.. _whatsnew_204.bug_fixes:
+
+Bug fixes
+~~~~~~~~~
+-
+-
+
+.. ---------------------------------------------------------------------------
+.. _whatsnew_204.other:
+
+Other
+~~~~~
+-
+-
+
+.. ---------------------------------------------------------------------------
+.. _whatsnew_204.contributors:
+
+Contributors
+~~~~~~~~~~~~
+
+.. contributors:: v2.0.3..v2.0.4|HEAD