remove python 3.7 from package classifiers

Author: belm0

setup.py

@@ -35,11 +35,11 @@ def main():
             "Operating System :: POSIX :: Linux",
             "Programming Language :: Python",
             "Programming Language :: Python :: 3 :: Only",
-            "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
+            "Programming Language :: Python :: 3.12",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: Python :: Implementation :: PyPy",
             "Framework :: AsyncIO",