Prepare release 4.13.1 (#573)

Author: JelleZijlstra

CHANGELOG.md

@@ -1,6 +1,6 @@
-# Unreleased
+# Release 4.13.1 (April 3, 2025)
 
-Bugfixes and changed features:
+Bugfixes:
 - Fix regression in 4.13.0 on Python 3.10.2 causing a `TypeError` when using `Concatenate`.
   Patch by [Daraan](https://github.com/Daraan).
 - Fix `TypeError` when using `evaluate_forward_ref` on Python 3.10.1-2 and 3.9.8-10.

pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "flit_core.buildapi"
 # Project metadata
 [project]
 name = "typing_extensions"
-version = "4.13.0"
+version = "4.13.1"
 description = "Backported and Experimental Type Hints for Python 3.8+"
 readme = "README.md"
 requires-python = ">=3.8"