Set tox version in github actions

Author: fabienheureux

.github/workflows/ci.yml

@@ -14,6 +14,19 @@ jobs:
     strategy:
       max-parallel: 5
       matrix:
+       include:
+         - python-version: 2.7
+           tox-version: "py27"
+         - python-version: 3.6
+           tox-version: "py36"
+         - python-version: 3.7
+           tox-version: "py37"
+         - python-version: 3.8
+           tox-version: "py38"
+         - python-version: 3.9
+           tox-version: "py39"
+        include:
+            -
         python-version: ['2.7', '3.6', '3.7', '3.8', '3.9']
 
     steps:
@@ -25,6 +38,6 @@ jobs:
 
       - name: Install Dependencies
         run: |
-          pip install -U tox-travis
+          pip install -U tox
       - name: Run Tests
-        run: tox
+        run: tox -e ${{ matrix.tox-version }}

setup.cfg

@@ -51,7 +51,6 @@ test =
     pytest-asyncio; python_version>="3.4"
     graphene>=2.0,<3
     gevent
-    graphene>=2.0
     graphene_django
     mock; python_version<"3"
     django==1.11.*; python_version<"3"