Bump astroid to 2.12.3, update changelog

CONTRIBUTORS.txt

@@ -39,6 +39,7 @@ Contributors
 - David Gilman <davidgilman1@gmail.com>
 - Julien Jehannet <julien.jehannet@logilab.fr>
 - Calen Pennington <calen.pennington@gmail.com>
+- Mark Byrne <31762852+mbyrnepr2@users.noreply.github.com>
 - Tim Martin <tim@asymptotic.co.uk>
 - Phil Schaf <flying-sheep@web.de>
 - Hugo van Kemenade <hugovk@users.noreply.github.com>
@@ -56,7 +57,6 @@ Contributors
 - Philip Lorenz <philip@bithub.de>
 - Nicolas Chauvat <nicolas.chauvat@logilab.fr>
 - Michael K <michael-k@users.noreply.github.com>
-- Mark Byrne <31762852+mbyrnepr2@users.noreply.github.com>
 - Mario Corchero <mariocj89@gmail.com>
 - Marien Zwart <marienz@gentoo.org>
 - Laura Médioni <laura.medioni@logilab.fr>
@@ -105,6 +105,7 @@ Contributors
 - Valentin Valls <valentin.valls@esrf.fr>
 - Uilian Ries <uilianries@gmail.com>
 - Tomas Novak <ext.Tomas.Novak@skoda-auto.cz>
+- Tim Paine <t.paine154@gmail.com>
 - Thirumal Venkat <me@thirumal.in>
 - SupImDos <62866982+SupImDos@users.noreply.github.com>
 - Stanislav Levin <slev@altlinux.org>
@@ -175,12 +176,6 @@ Contributors
 - Alexander Scheel <alexander.m.scheel@gmail.com>
 - Alexander Presnyakov <flagist0@gmail.com>
 - Ahmed Azzaoui <ahmed.azzaoui@engie.com>
-- nathannaveen <42319948+nathannaveen@users.noreply.github.com>
-- adam-grant-hendry <59346180+adam-grant-hendry@users.noreply.github.com>
-- Deepyaman Datta <deepyaman.datta@utexas.edu>
-- Batuhan Taskaya <isidentical@gmail.com>
-- Alexander Scheel <alexander.m.scheel@gmail.com>
-- Tim Paine <t.paine154@gmail.com>
 
 Co-Author
 ---------

ChangeLog

@@ -8,10 +8,16 @@ Release date: TBA
 
 
 
-What's New in astroid 2.12.3?
+What's New in astroid 2.12.4?
 =============================
 Release date: TBA
 
+
+
+What's New in astroid 2.12.3?
+=============================
+Release date: 2022-08-23
+
 * Fixed crash in ``ExplicitNamespacePackageFinder`` involving ``_SixMetaPathImporter``.
 
   Closes #1708

astroid/__pkginfo__.py

@@ -2,5 +2,5 @@
 # For details: https://github.com/PyCQA/astroid/blob/main/LICENSE
 # Copyright (c) https://github.com/PyCQA/astroid/blob/main/CONTRIBUTORS.txt
 
-__version__ = "2.12.2"
+__version__ = "2.12.3"
 version = __version__

tbump.toml

@@ -1,7 +1,7 @@
 github_url = "https://github.com/PyCQA/astroid"
 
 [version]
-current = "2.12.2"
+current = "2.12.3"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.