Update rtd

.readthedocs.yml

@@ -7,11 +7,14 @@
 
 # Required
 version: 2
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.11"
 sphinx:
   configuration: docs/source/conf.py
 formats: all
 python:
-  version: 3.11
   install:
   - requirements: requirements/docs.txt
   - method: pip