Bump pylint to 2.9.1, update changelog

Author: Pierre-Sassoulas

ChangeLog

@@ -10,15 +10,24 @@ Release date: TBA
   Put new features here and also in 'doc/whatsnew/2.10.rst'
 
 
-What's New in Pylint 2.9.1?
+What's New in Pylint 2.9.2?
 ===========================
 Release date: TBA
-
 ..
   Put bug fixes that should not wait for a new minor version here
 
 
 
+What's New in Pylint 2.9.1?
+===========================
+Release date: 2021-06-30
+
+* Upgrade astroid to 2.6.2
+
+  Closes #4631
+  Closes #4633
+
+
 What's New in Pylint 2.9.0?
 ===========================
 Release date: 2021-06-29

pylint/__pkginfo__.py

@@ -2,7 +2,7 @@
 # For details: https://github.com/PyCQA/pylint/blob/master/LICENSE
 from typing import Tuple
 
-__version__ = "2.9.1-dev0"
+__version__ = "2.9.1"
 
 
 def get_numversion_from_version(v: str) -> Tuple:

pylint/extensions/confusing_elif.py

@@ -1,5 +1,5 @@
-# Copyright (c) 2021 Andreas Finkler <[email protected]>
 # Copyright (c) 2021 Pierre Sassoulas <[email protected]>
+# Copyright (c) 2021 Andreas Finkler <[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/master/LICENSE

tbump.toml

@@ -1,7 +1,7 @@
 github_url = "https://github.com/PyCQA/pylint"
 
 [version]
-current = "2.9.1-dev0"
+current = "2.9.1"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.