Bump pylint to 2.11.1, update changelog

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index eddc4ae..c730dc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,10 +13,16 @@
 
 
 
-What's New in Pylint 2.11.1?
+What's New in Pylint 2.11.2?
 ============================
 Release date: TBA
 
+
+
+What's New in Pylint 2.11.1?
+============================
+Release date: 2021-09-16
+
 ..
   Put bug fixes that should not wait for a new minor version here
 

pylint/__pkginfo__.py

diff --git a/pylint/__pkginfo__.py b/pylint/__pkginfo__.py
index ad4029e..2e9d7b7 100644
--- a/pylint/__pkginfo__.py
+++ b/pylint/__pkginfo__.py
@@ -2,7 +2,7 @@
 # For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
 from typing import Tuple
 
-__version__ = "2.11.1-dev0"
+__version__ = "2.11.1"
 
 
 def get_numversion_from_version(v: str) -> Tuple:

tbump.toml

diff --git a/tbump.toml b/tbump.toml
index 00ba467..60e3948 100644
--- a/tbump.toml
+++ b/tbump.toml
@@ -1,7 +1,7 @@
 github_url = "https://github.com/PyCQA/pylint"
 
 [version]
-current = "2.11.1-dev0"
+current = "2.11.1"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.