build: stop testing Python 3.8, add 3.12 & 3.13

3.8 is unsupported and dependencies (such as pydantic) are now shipping
releases that fail to type check with mypy running in 3.8 compatibility
mode. We'd need to pin test dependencies to old versions supporting 3.8
to type-check 3.8.

Author: h4l

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python: ['3.8', '3.9', '3.10', '3.11']
+        python: ['3.9', '3.10', '3.11']
         os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:

mypy.ini

@@ -1,6 +1,6 @@
 [mypy]
 plugins = pydantic.mypy
-python_version = 3.8
+python_version = 3.9
 
 pretty = True
 show_error_context = True

requirements/test.txt

@@ -4,12 +4,7 @@ flake8-print
 pytest
 pytest-cov
 # web app tests
-
-# sanic stopped supporting 3.8 in 24.12:
-# https://sanic.dev/en/release-notes/changelog.html#version-24120-
-sanic         ; python_version >= '3.9'
-sanic<24.12.0 ; python_version <  '3.9'
-
+sanic
 sanic-testing
 aiohttp
 Pillow

setup.py

@@ -65,7 +65,6 @@ def get_version(rel_path):
             "Programming Language :: Python",
             "Programming Language :: Python :: 3",
             "Programming Language :: Python :: 3 :: Only",
-            "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",