Bump version to 2.0.3 in pyproject.toml

Author: alelom

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "concurrent_collections"
-version = "2.0.2"
+version = "2.0.3"
 description = "A brief description of concurrent-collections"
 authors = [{ name = "Alessio Lombardi", email = "work@alelom.com" }]
 license = { file = "MIT" }