hash poetry.lock instead of pyproject.toml in ci

{{ cookiecutter.name }}/.github/actions/build/action.yml

@@ -9,7 +9,7 @@ runs:
       uses: actions/cache@v4
       with:
         path: ~/.local
-        key: poetry-v1-${{ hashFiles('pyproject.toml') }}
+        key: poetry-v1-${{ hashFiles('poetry.lock') }}
 
     - name: install poetry
       if: steps.cached-poetry.outputs.cache-hit != true