Set RDKit version to Release_2025_03_6 (#139) [skip ci]

Co-authored-by: Create or Update Pull Request Action <[email protected]>

Author: github-actions[bot]

setup.py

@@ -12,7 +12,7 @@
 from setuptools.command.build_ext import build_ext as build_ext_orig
 
 # RDKit version to build (tag from github repository)
-rdkit_tag = "Release_2025_03_5"
+rdkit_tag = "Release_2025_03_6"
 
 with open("README.md", "r", encoding="utf-8") as fh:
     long_description = fh.read()