bump PyPI version to v5.2.9

Author: diezo

setup.py

@@ -1,7 +1,7 @@
 from distutils.core import setup
 from pathlib import Path
 
-version = "5.3.0"
+version = "5.2.9"
 long_description = (Path(__file__).parent / "README.md").read_text(encoding="utf-8").replace(
     "[!IMPORTANT]",
     "**Important:**"