fix docs

.readthedocs.yml

@@ -9,6 +9,11 @@ version: 2
 sphinx:
   configuration: sourcedocs/conf.py
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+
 # Build documentation with MkDocs
 #mkdocs:
 #  configuration: mkdocs.yml
@@ -18,7 +23,7 @@ formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.7
+  version: 3.12
   install:
     - requirements: sourcedocs/requirements.txt
     - method: pip