Increment version number to 2.3.1

PiperOrigin-RevId: 865493953
Change-Id: Idb5e98d8f615aa6365e638ee852bff7e52d54367

Author: jzleibo

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
+## [2.3.1] - 2026-02-04
+
+### Fixed
+
+- Remove a flaky profiler test.
+
 ## [2.3.0] - 2026-02-04
 
 ### Changed

setup.py

@@ -33,7 +33,7 @@ def _remove_excluded(description: str) -> str:
 
 setuptools.setup(
     name='gdm-concordia',
-    version='2.3.0',
+    version='2.3.1',
     license='Apache 2.0',
     license_files=['LICENSE'],
     url='https://github.com/google-deepmind/concordia',