Update supported python versions

Author: satterly

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.8', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v3

setup.py

@@ -18,7 +18,7 @@ def read(filename):
     url='https://github.com/guardian/python-alerta',
     license='Apache License 2.0',
     author='Nick Satterly',
-    author_email='nick.satterly@gmail.com',
+    author_email='nfsatterly@gmail.com',
     packages=setuptools.find_packages(exclude=['tests']),
     install_requires=[
         'Click',
@@ -42,12 +42,12 @@ def read(filename):
         'Intended Audience :: System Administrators',
         'Intended Audience :: Telecommunications Industry',
         'License :: OSI Approved :: Apache Software License',
+        'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.6',
         'Topic :: System :: Monitoring',
         'Topic :: Software Development :: Libraries :: Python Modules'
     ],
-    python_requires='>=3.6'
+    python_requires='>=3.8'
 )