Merge pull request #402 from lkhagvadorj-amp/fix/drop_python_3.8

fix: remove python 3.8 from various places, #385

Author: BentsiLeviav

setup.py

@@ -59,15 +59,14 @@ def _dbt_clickhouse_version():
         'clickhouse-driver>=0.2.6',
         'setuptools>=0.69',
     ],
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     platforms='any',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: Microsoft :: Windows',
         'Operating System :: MacOS :: MacOS X',
         'Operating System :: POSIX :: Linux',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',