Prepare for release 23.6.0 (#408)

3.7 is now end-of-life, so I think we're good to go here. (Marking as
draft because I'd like it if #407 could get in.)

Author: AlexWaygood

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Change Log
 
-## Unreleased
+## 23.6.0
 
 Features:
 * Support Python 3.12
@@ -35,7 +35,7 @@ Bugfixes:
   constraints. This bug has now been fixed.
 
 Other changes:
-* flake8-pyi no longer supports being run on Python 3.7.
+* flake8-pyi no longer supports being run on Python 3.7, which has reached its end of life.
 * flake8-pyi no longer supports being run with flake8 <v6.
 
 ## 23.5.0

pyi.py

@@ -37,7 +37,7 @@ def unparse(node: ast.AST) -> str:
     # and mypy thinks typing_extensions is part of the stdlib.
     from typing_extensions import Literal, TypeAlias, TypeGuard
 
-__version__ = "23.5.0"
+__version__ = "23.6.0"
 
 LOG = logging.getLogger("flake8.pyi")