ci: cache poetry virtualenv

Signed-off-by: Sumner Evans <[email protected]>

Author: sumnerevans

.github/workflows/python.yaml

@@ -2,7 +2,6 @@ name: Python
 
 on:
   push:
-    branches: [ "*" ]
   pull_request:
     branches: [ master ]
   release:
@@ -22,12 +21,12 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ env.PYTHON_VERSION }}
-    - name: Run image
-      uses: abatilo/actions[email protected]
-
-    - name: Install dependencies
-      run: |
-        poetry install
+    - uses: abatilo/[email protected]
+    - uses: actions/cache@v3
+      with:
+        path: ~/.cache/pypoetry/virtualenvs
+        key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
+    - run: poetry install
 
     - uses: isort/isort-action@master