Update version to 4.6.3

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98d81f9..ecaea2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# Unreleased
+# Release 4.6.3 (June 1, 2023)
 
 - Fix a regression introduced in v4.6.0 in the implementation of
   runtime-checkable protocols. The regression meant

pyproject.toml

diff --git a/pyproject.toml b/pyproject.toml
index 74ec5ed..3858e80 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@
 # Project metadata
 [project]
 name = "typing_extensions"
-version = "4.6.2"
+version = "4.6.3"
 description = "Backported and Experimental Type Hints for Python 3.7+"
 readme = "README.md"
 requires-python = ">=3.7"