Update rtd poetry version to 1.7.1

readthedocs.yml

@@ -10,7 +10,7 @@ build:
   tools: {python: "3.9"}
   jobs:
     post_install:
-      - pip install poetry==1.2.1
+      - pip install poetry==1.7.1
       - poetry config virtualenvs.create false
       - poetry install --with docs