Resolve Python version inconsistency with issue title and change log entry

CHANGES.rst

@@ -52,7 +52,7 @@ New features:
 
 Bug fixes:
 
-- Change documentation to represent compatibility to Python 3.8+ and PyPy3
+- Change documentation to represent compatibility with Python 3.8 - 3.12, and PyPy3.
 - Rename RFC 2445 to RFC 5545, see `Issue 278
   <https://github.com/collective/icalendar/issues/278>`_
 

README.rst

@@ -166,7 +166,7 @@ you can receive all the latest updates, and switch back to earlier behavior:
     <DstTzInfo 'Europe/Vienna' CET+1:00:00 STD>
 
 Version 6 is on `branch main <https://github.com/collective/icalendar/>`_.
-It is compatible with Python versions 3.7 - 3.11, and PyPy3.
+It is compatible with Python versions 3.8 - 3.12, and PyPy3.
 We expect the ``main`` branch with versions ``6+`` to receive the latest updates and features.
 
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