Remove Python 3.8 from pyproject.toml

Author: pdelboca

pyproject.toml

@@ -14,7 +14,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "Development Status :: 5 - Production/Stable",
     "License :: OSI Approved :: GNU Affero General Public License v3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",