Add note that change to MessageProperties.msgid marked the attribute

read only.

Author: anthony-tuininga

doc/src/release_notes.rst

@@ -13,7 +13,8 @@ Version 8.3 (TBD)
 #)  Updated embedded ODPI-C to `version 4.3.0
     <https://oracle.github.io/odpi/doc/releasenotes.html#
     version-4-3-tbd>`__.
-#)  Corrected calculation of attribute :data:`MessageProperties.msgid`.
+#)  Corrected calculation of attribute :data:`MessageProperties.msgid`. Note
+    that the attribute is now also read only.
 #)  Binary integer variables now explicitly convert values to integers (since
     implicit conversion to integer has become an error in Python 3.10) and
     values that are not `int`, `float` or `decimal.Decimal` are explicitly