Remove support for Python 3.6

Author: rohe

Diff for: .github/workflows/python-app.yml

@@ -18,10 +18,10 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - '3.6'
           - '3.7'
           - '3.8'
           - '3.9'
+          - '3.10'
 
     steps:
     - uses: actions/checkout@v2

Diff for: setup.py

@@ -68,13 +68,13 @@ def run_tests(self):
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved :: Apache Software License",
-        "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",
         "Topic :: Software Development :: Libraries :: Python Modules"],
     install_requires=[
-        'oidcmsg==1.5.4',
+        'oidcmsg==1.6.0',
         'pyyaml>=5.1.2',
         'responses'
     ],