Core: Change readthedocs build platform

Fixes #953

Author: ikelos

.readthedocs.yml

@@ -12,8 +12,12 @@ sphinx:
 # Optionally build your docs in additional formats such as PDF and ePub
 formats: all
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.11
   install:
     - requirements: doc/requirements.txt