Bump pylint to 2.9.6, update changelog

ChangeLog

@@ -2,6 +2,9 @@
 Pylint's ChangeLog
 ------------------
 
+..
+  Put bug fixes that should not wait for a new minor version here
+
 What's New in Pylint 2.10.0?
 ============================
 Release date: TBA
@@ -10,13 +13,16 @@ Release date: TBA
   Put new features here and also in 'doc/whatsnew/2.10.rst'
 
 
+
 What's New in Pylint 2.9.6?
 ===========================
-Release date: TBA
+Release date: 2021-07-28
 
-..
-  Put bug fixes that should not wait for a new minor version here
 
+* Fix a false positive ``undefined-variable`` when variable name in decoration
+  matches function argument
+
+  Closes #3791
 
 
 What's New in Pylint 2.9.5?

pylint/__pkginfo__.py

@@ -2,7 +2,7 @@
 # For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
 from typing import Tuple
 
-__version__ = "2.9.6-dev0"
+__version__ = "2.9.6"
 
 
 def get_numversion_from_version(v: str) -> Tuple:

pylint/checkers/variables.py

@@ -39,12 +39,12 @@
 # Copyright (c) 2020 Andrew Simmons <[email protected]>
 # Copyright (c) 2020 Anthony Sottile <[email protected]>
 # Copyright (c) 2020 Ashley Whetter <[email protected]>
+# Copyright (c) 2021 Marcin Kurczewski <[email protected]>
 # Copyright (c) 2021 Marc Mueller <[email protected]>
 # Copyright (c) 2021 Sergei Lebedev <[email protected]>
 # Copyright (c) 2021 Lorena B <[email protected]>
 # Copyright (c) 2021 haasea <[email protected]>
 # Copyright (c) 2021 Alexander Kapshuna <[email protected]>
-# Copyright (c) 2021 Marcin Kurczewski <[email protected]>
 
 # Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 # For details: https://github.com/PyCQA/pylint/blob/main/LICENSE

tbump.toml

@@ -1,7 +1,7 @@
 github_url = "https://github.com/PyCQA/pylint"
 
 [version]
-current = "2.9.6-dev0"
+current = "2.9.6"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.