Roll back RTD Python

Author: wRAR

.github/workflows/test.yml

@@ -42,7 +42,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.13']
+        python-version: ['3.12']  # Keep in sync with .readthedocs.yml
         tox-job: ["mypy", "docs"]
 
     steps:

.readthedocs.yml

@@ -7,7 +7,7 @@ build:
   tools:
     # For available versions, see:
     # https://docs.readthedocs.io/en/stable/config-file/v2.html#build-tools-python
-    python: "3.13"  # Keep in sync with .github/workflows/test.yml
+    python: "3.12"  # Keep in sync with .github/workflows/test.yml
 python:
   install:
     - requirements: docs/requirements.txt