Test only Python versions available on github's ubuntu 22.04

Author: rayluo

.github/workflows/python-package.yml

@@ -23,10 +23,10 @@ jobs:
       LAB_OBO_PUBLIC_CLIENT_ID: ${{ secrets.LAB_OBO_PUBLIC_CLIENT_ID }}
 
     # Derived from https://docs.github.com/en/actions/guides/building-and-testing-python#starting-with-the-python-workflow-template
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest  # It switched to 22.04 shortly after 2022-Nov-8
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, "3.10", "3.11-dev"]
+        python-version: [2.7, 3.7, 3.8, 3.9, "3.10", "3.11", "3.12-dev"]
 
     steps:
     - uses: actions/checkout@v2

tests/test_authority.py

@@ -59,7 +59,10 @@ def test_lessknown_host_will_return_a_set_of_v1_endpoints(self):
         self.assertNotIn('v2.0', a.token_endpoint)
 
     def test_unknown_host_wont_pass_instance_discovery(self):
-        _assert = getattr(self, "assertRaisesRegex", self.assertRaisesRegexp)  # Hack
+        _assert = (
+            # Was Regexp, added alias Regex in Py 3.2, and Regexp will be gone in Py 3.12
+            getattr(self, "assertRaisesRegex", None) or
+            getattr(self, "assertRaisesRegexp", None))
         with _assert(ValueError, "invalid_instance"):
             Authority('https://example.com/tenant_doesnt_matter_in_this_case',
                       MinimalHttpClient())