update readthedocs

.readthedocs.yml

@@ -9,15 +9,15 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.9"
+    python: "3.10"
   jobs:
     post_create_environment:
       # Install poetry
       # https://python-poetry.org/docs/#installing-manually
       - pip install poetry
     post_install:
       - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install
-      
+
 # Build documentation in the "docs/" directory with Sphinx
 sphinx:
   configuration: docs/conf.py