docs: update changelog for 0.16.6

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

CHANGES.rst

@@ -21,9 +21,15 @@ Documentation
   * After sending a `last message <https://groups.google.com/g/scikit-build/c/jU7-EvvMPb8>`_ describing the transition, the mailing list was updated to be read-only and the welcome message was updated to redirect visitor toward the Discussions board.
 
 
-Scikit-build 0.16.5
+Scikit-build 0.16.6
 ===================
 
+* Fix a discovery regression in 0.16.5 when a ``cmake`` folder or ``cmake.py`` was present in :pr:`848`.
+* Correct an issue in the tests where a generator wasn't expanded into a list in :pr:`850`.
+
+
+Scikit-build 0.16.5
+===================
 
 * Use cmake module if installed over system installs in :pr:`839`.
 * Support setting of ``-DCMAKE_SYSTEM_PROCESSOR`` if passed for selecting an arch, useful for cross compiling on conda-forge in :pr:`843`.
@@ -32,7 +38,6 @@ Scikit-build 0.16.5
 * Add test markers for nosetuptoolsscm and isolated (helpful for package distributions building scikit-build itself like conda) in :pr:`837`.
 
 
-
 Scikit-build 0.16.4
 ===================