change poetry version to poetry==1.2.2

  the reason for this change is to keep the old lock file format and
  avoid incompatibility with version in main of F1ashhimself/electricitybot

  later on version can be changed to 1.3.1 or any other later version
  (requrie changes in .github/workflows/app.yaml, Dockerfile and update
  version on local enviroment)

  python-poetry/poetry#6393

.github/workflows/app.yaml

@@ -17,7 +17,7 @@ jobs:
 
       - name: Install poetry
         run: |
-          pip install poetry==1.3.1
+          pip install poetry==1.2.2
 
       - name: Install dependencies
         run: |