Remove unavailable ubuntu 20.04 for 3.7

Author: keitheis

.github/workflows/ci.yml

@@ -13,12 +13,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - python-version: "3.7"
-            toxenv: py37
-            os: ubuntu-20.04
           - python-version: "3.8"
             toxenv: py38
-            os: ubuntu-20.04
+            os: ubuntu-latest
           - python-version: "3.9"
             toxenv: py39
             os: ubuntu-latest

setup.py

@@ -32,7 +32,6 @@
         'Topic :: Software Development',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',

tox.ini

@@ -1,13 +1,12 @@
 [tox]
 envlist =
-    py37,py38,py39,py310,py311,py312,py313,pypy,
+    py38,py39,py310,py311,py312,py313,pypy,
     py3-cover,coverage
 
 [testenv]
 # Most of these are defaults but if you specify any you can't fall back
 # to defaults for others.
 basepython =
-    py37: python3.7
     py38: python3.8
     py39: python3.9
     py310: python3.10