Preparing release 5.0.3

[ci skip]

Author: gforcada

CHANGES.rst

@@ -3,7 +3,7 @@
 Changelog
 =========
 
-5.0.3 (unreleased)
+5.0.3 (2022-11-20)
 ------------------
 
 - Fix broken `add_options` method, again. [casperdcl]

setup.py

@@ -17,7 +17,7 @@ def read_file(filename):
 
 setup(
     name='flake8-isort',
-    version='5.0.3.dev0',
+    version='5.0.3',
     description=short_description,
     long_description=long_description,
     # Get more from https://pypi.org/classifiers/