Update minimum requirements for typing-extensions

setup.cfg

@@ -1,6 +1,5 @@
 [metadata]
 name = settngs
-version = 0.6.3
 description = A library for managing settings
 long_description = file: README.md
 long_description_content_type = text/markdown
@@ -19,7 +18,7 @@ classifiers =
 [options]
 packages = find:
 install_requires =
-    typing-extensions;python_version < '3.11'
+    typing-extensions>=4.3.0;python_version < '3.11'
 python_requires = >=3.8
 include_package_data = True