add changelog entry

CHANGELOG.rst

@@ -6,6 +6,8 @@ in development
 
 Python 3.6 is no longer supported; Stackstorm requires at least Python 3.8.
 
+Newer mongo versions are now supported. CI uses mongo 7.0.
+
 Fixed
 ~~~~~
 * Fixed #6021 and #5327 by adding max_page_size to api_opts and added limit and offset to list_values() methods of
@@ -31,6 +33,9 @@ Changed
 * Updated unit tests to use redis for coordination instead of the NoOp driver. This will hopefully make CI more stable. #6245
   Contributed by @FileMagic, @guzzijones, and @cognifloyd
 
+* Update CI from testing with mongo 4.4 to testing with mongo 7.0. #6246
+  Contributed by @guzzijones
+
 Added
 ~~~~~
 * Continue introducing `pants <https://www.pantsbuild.org/docs>`_ to improve DX (Developer Experience)