use poetry and don't publish if it failed tests

.github/workflows/publish-to-pypi.yml

@@ -1,6 +1,10 @@
 name: Publish PyGeoweaver Python 🐍 distributions 📦 to PyPI and TestPyPI
 
-on: push
+on:
+  workflow_run:
+    workflows: ["Run Tests"]
+    types:
+      - completed
 
 jobs:
   test-installation:

.github/workflows/tests.yml

@@ -21,15 +21,18 @@ jobs:
         with:
           python-version: '3.9' # specify the Python version you need
 
+      - name: Install Poetry
+        run: |
+          curl -sSL https://install.python-poetry.org | python3 -
+          export PATH="$HOME/.local/bin:$PATH"
+
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install pytest
+          poetry install
 
       - name: Run tests
         run: |
-          pytest tests/
+          poetry run pytest tests/
 
       - name: Upload pytest results
         if: always()