bring docs up to python 312 across the board

.readthedocs.yml

@@ -7,11 +7,11 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-22.04
+  os: ubuntu-24.04
   apt_packages:
     - redis
   tools:
-    python: "3.11"
+    python: "3.12"
   jobs:
     post_system_dependencies:
       - redis-server --daemonize yes

tox.ini

@@ -24,7 +24,7 @@ commands =
 
 [testenv:docs]
 description = invoke sphinx-build to build the HTML docs
-basepython = python3.11
+basepython = python3.12
 install_command = pip install -e ".[docs]" -U {opts} {packages}
 commands =
     sphinx-build -T -E -b html -d "{toxworkdir}/docs_doctree" -D language=en docs "{toxworkdir}/docs_out" {posargs}