chg: migrate to poetry 2.0

Author: Rafiot

.readthedocs.yml

@@ -1,14 +1,17 @@
 version: 2
+build:
+  os: "ubuntu-lts-latest"
+  tools:
+    python: "3"
+
+sphinx:
+  configuration: docs/source/conf.py
 
 python:
-  version: 3.8
   install:
       - method: pip
         path: .
         extra_requirements:
             - docs
 
-build:
-    image: latest
-
 formats: all