:chore: Updated poetry in github workflow file

Author: MarcoMuellner

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           python-version: 3.9
           architecture: x64
-      - run: pip install poetry==1.1.13
+      - run: pip install poetry==1.3.1
       - run: poetry install
       - run: poetry run pytest
       - run: poetry run pytest --cov=src/ --cov-report=xml --cov-fail-under 90 --cov-config=.coveragerc