Move actions to env (for windows compatibility)

Author: terriko

.github/workflows/pythonapp.yml

@@ -17,6 +17,8 @@ jobs:
       matrix:
          os: [ubuntu-latest, windows-latest]
          python: [3.6, 3.7]
+    env:
+      ACTIONS: 1
     steps:
     - uses: actions/checkout@v1
     - name: Set up Python
@@ -29,5 +31,5 @@ jobs:
         pip install -r requirements.txt
     - name: Run tests
       run: |
-        ACTIONS=1 python setup.py test
+        python setup.py test