add python 3.12 support

Author: Cube707

.github/workflows/run-tests.yaml

@@ -59,6 +59,7 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
+          - '3.12'
     steps:
       - name: Checkout
         uses: actions/checkout@v3

.pre-commit-config.yaml

@@ -31,7 +31,7 @@ repos:
         id: flake8
 
   - repo: https://github.com/asottile/setup-cfg-fmt
-    rev: v2.4.0
+    rev: v2.5.0
     hooks:
       - name: format setup.cfg
         id: setup-cfg-fmt

setup.cfg

@@ -22,6 +22,7 @@ classifiers =
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
+    Programming Language :: Python :: 3.12
     Programming Language :: Python :: Implementation :: CPython
     Topic :: Software Development
     Topic :: Software Development :: User Interfaces