PYTHON-4524 Document support for MongoDB 8.0 (mongodb#1721)

Author: ShaneHarvey

README.md

@@ -14,7 +14,7 @@ a native Python driver for MongoDB. The `gridfs` package is a
 [gridfs](https://github.com/mongodb/specifications/blob/master/source/gridfs/gridfs-spec.rst/)
 implementation on top of `pymongo`.
 
-PyMongo supports MongoDB 3.6, 4.0, 4.2, 4.4, 5.0, 6.0, and 7.0.
+PyMongo supports MongoDB 3.6, 4.0, 4.2, 4.4, 5.0, 6.0, 7.0, and 8.0.
 
 ## Support / Feedback
 

doc/changelog.rst

@@ -6,6 +6,7 @@ Changes in Version 4.9.0
 
 PyMongo 4.9 brings a number of improvements including:
 
+- Added support for MongoDB 8.0.
 - A new asynchronous API with full asyncio support.
 - pymongocrypt>=1.10 is now required for :ref:`In-Use Encryption` support.