fixup! fixup! docs: Deprecating message for problem-builder

Author: xitij2000

setup.py

@@ -171,8 +171,8 @@ def package_data(pkg, roots):
     classifiers=[
         "Development Status :: 7 - Inactive",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     long_description=README,
     long_description_content_type='text/markdown',