Adjust versionadded:: to be about 3.12.3, only

As suggested by Serhiy Storchaka

Author: hartwork

Doc/library/pyexpat.rst

@@ -217,14 +217,14 @@ XMLParser Objects
    Calling ``SetReparseDeferralEnabled(True)`` allows re-enabling reparse
    deferral.
 
-   .. versionadded:: 3.13 backported to 3.8.19, 3.9.19, 3.10.14, 3.11.9, 3.12.3
+   .. versionadded:: 3.12.3
 
 .. method:: xmlparser.GetReparseDeferralEnabled()
 
    Returns whether reparse deferral is currently enabled for the given
    Expat parser instance.
 
-   .. versionadded:: 3.13 backported to 3.8.19, 3.9.19, 3.10.14, 3.11.9, 3.12.3
+   .. versionadded:: 3.12.3
 
 
 :class:`xmlparser` objects have the following attributes:

Doc/library/xml.etree.elementtree.rst

@@ -1397,7 +1397,7 @@ XMLParser Objects
       Disabling reparse deferral has security consequences; please see
       :meth:`xml.parsers.expat.xmlparser.SetReparseDeferralEnabled` for details.
 
-      .. versionadded:: 3.13 backported to 3.8.19, 3.9.19, 3.10.14, 3.11.9, 3.12.3
+      .. versionadded:: 3.12.3
 
 
    :meth:`XMLParser.feed` calls *target*\'s ``start(tag, attrs_dict)`` method
@@ -1470,7 +1470,7 @@ XMLPullParser Objects
       Disabling reparse deferral has security consequences; please see
       :meth:`xml.parsers.expat.xmlparser.SetReparseDeferralEnabled` for details.
 
-      .. versionadded:: 3.13 backported to 3.8.19, 3.9.19, 3.10.14, 3.11.9, 3.12.3
+      .. versionadded:: 3.12.3
 
    .. method:: close()