task(ci): add cache for virtual environment

.github/workflows/run-tests.yml

@@ -20,6 +20,13 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install poetry
         uses: abatilo/actions-poetry@v3.0.0
+      # Cache the virtual environment to speed up build time
+      # See https://github.com/marketplace/actions/python-poetry-action#workflow-example-cache-the-virtual-environment
+      - uses: actions/cache@v3
+        name: Define cache for the virtual environment
+        with:
+          path: ./.venv
+          key: venv-${{ hashFiles('poetry.lock') }}
       - name: Install dependencies
         run: poetry install
       - name: Run tests

poetry.toml

@@ -0,0 +1,3 @@
+[virtualenvs]
+create = true
+in-project = true