Update with Python 3.11 support (#260)

* Test python with 3.11

Test with python 3.11. Also remove python 3.7 since it is EOL https://www.python.org/downloads/

* Update setup.py

.github/workflows/pr.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - uses: actions/checkout@v3

setup.py

@@ -57,10 +57,10 @@ def get_version(*file_paths):
         "License :: OSI Approved :: Apache Software License",
         "Natural Language :: English",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "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",
     ],
     entry_points={"console_scripts": ["rele-cli=rele.__main__:main"]},
 )