Bump readthedocs config to use conda env

.readthedocs.yml

@@ -3,18 +3,14 @@
 version: 2
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-24.04
   tools:
-    python: "3.11"
+    python: "3.12"
 
 # Build documentation with Sphinx
 sphinx:
   builder: html
   configuration: docs/source/conf.py
 
-# Optional but recommended, declare the Python requirements required
-# to build your documentation
-# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
-python:
-  install:
-    - requirements: docs-requirements.txt
+conda:
+  environment: environment.yml