Update readthedocs configuration to account for https://blog.readthedocs.com/use-build-os-config/ and add Python 3.11 to CI

Author: alessiostalla

.github/workflows/pythonapp.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python: [ '3.7', '3.8', '3.9', '3.10' ]
+        python: [ '3.7', '3.8', '3.9', '3.10', '3.11' ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.readthedocs.yaml

@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py