Use latest Python to build Readthedocs

Newer Python versions are more performant and thus builds the docs faster, also allowing more notebooks to be rendered with batch runs and complex graphs within the allowed runtime.

.readthedocs.yml

@@ -15,7 +15,7 @@ formats:
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.9"
+    python: "3"
 
 # Optionally set the version of Python and requirements required to build your docs
 python: