Update CHANGELOG.md

Author: sybrenstuvel

CHANGELOG.md

@@ -1,13 +1,15 @@
 # Python-RSA changelog
 
-## Version 4.9 - - released 2022-07-15
+## Version 4.9 - almost released
 
 - Remove debug logging from `rsa/key.py`
   ([#194](https://github.com/sybrenstuvel/python-rsa/issues/194)).
 - Remove overlapping slots in `PrivateKey` and `PublicKey`.
   ([#189](https://github.com/sybrenstuvel/python-rsa/pull/189)).
 - Do not include CHANGELOG/LICENSE/README.md in wheel
   ([#191](https://github.com/sybrenstuvel/python-rsa/pull/191)).
+- Fixed Key Generation Unittest: Public and Private keys are assigned the wrong way around
+  ([#188](https://github.com/sybrenstuvel/python-rsa/pull/188)).
 
 ## Version 4.8 - released 2021-11-24