adjusted readthedocs pipeline to new pyproject.toml

.readthedocs.yml

@@ -5,8 +5,11 @@ build:
   tools:
     python: "3.8"
   jobs:
+    post_create_environment:
+      - pip install poetry
+      - poetry self add poetry-dynamic-versioning
     post_install:
-    - pip install -e ".[sil,docs]"
+      - poetry install --extras "all"
 
 sphinx:
   configuration: docs/conf.py