Release Abseil-py 2.3.1

PiperOrigin-RevId: 778811295

Author: Abseil Team

CHANGELOG.md

@@ -12,6 +12,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com).
 
 ### Fixed
 
+## 2.3.1 (2025-07-03)
+
+### Changed
+
+*  (cleanup) Removed leftover code supporting Python < 3.8, as well as other
+  references to older Python versions.
+
+### Fixed
+
+*  (typechecking) Fixed typechecking errors that appeared under mypy release 1.16
+
 ## 2.3.0 (2025-05-26)
 
 ### Added

absl/__init__.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '2.3.0'
+__version__ = '2.3.1'