Use poetry on readthedocs

.readthedocs.yaml

@@ -13,9 +13,17 @@ sphinx:
 formats:
    - pdf
 
-# Optionally declare the Python requirements required to build your docs
-python:
-   install:
-   - requirements: docs/requirements-docs.txt
-   - method: pip
-     path: .
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.10"
+  jobs:
+    post_create_environment:
+      # Install poetry
+      # https://python-poetry.org/docs/#installing-manually
+      - pip install poetry
+      # Tell poetry to not use a virtual environment
+      - poetry config virtualenvs.create false
+      # Install dependencies with 'docs' dependency group
+      # https://python-poetry.org/docs/managing-dependencies/#dependency-groups
+      - poetry install --with docs