Run pre-commit, coverage, and readthedocs on Python 3.13

Author: adamchainz

.github/workflows/main.yml

@@ -63,7 +63,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5

.pre-commit-config.yaml

@@ -2,7 +2,7 @@ ci:
   autoupdate_schedule: monthly
 
 default_language_version:
-  python: python3.12
+  python: python3.13
 
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks