[MAINT] updte RTD config

Author: Remi-Gau

.readthedocs.yml

@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: '3.12'
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py
@@ -21,6 +26,5 @@ formats:
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: "3.7"
   install:
     - requirements: requirements.txt