Update changelog

Author: RKrahl

doc/src/changelog.rst

@@ -4,8 +4,11 @@ History of changes to pytest-dependency
 dev (not yet released)
     Bug fixes and minor changes
       + `#40`_: add logging.
+      + `#50`_, `#51`_: test suite incompatibility with pytest 6.2.0.
 
 .. _#40: https://github.com/RKrahl/pytest-dependency/issues/40
+.. _#50: https://github.com/RKrahl/pytest-dependency/issues/50
+.. _#51: https://github.com/RKrahl/pytest-dependency/pull/51
 
 0.5.1 (2020-02-14)
     Bug fixes and minor changes