fix: use previous matrix

Author: Agus Makmun

.github/workflows/run-tests.yml

@@ -13,16 +13,74 @@ jobs:
 
     strategy:
       matrix:
-        os: [ macos-latest, ubuntu-latest ]
-        python-version: [ 3.7, 3.8, 3.9 ]
-        django-version: [ 3.0, 3.1, 3.2, 4.0, 4.2, 5.0 ]
-        exclude:
-          - os: macos-latest
-            django-version: 4.1
-          - os: macos-latest
-            django-version: 4.2
-          - os: macos-latest
-            django-version: 5.0
+        include:
+          - python: 3.6
+            env: DJANGO="==1.8.*"
+          - python: 3.6
+            env: DJANGO="==1.9.*"
+          - python: 3.6
+            env: DJANGO="==1.10.*"
+          - python: 3.6
+            env: DJANGO="==1.11.*"
+          - python: 3.6
+            env: DJANGO="==2.0.*"
+          - python: 3.6
+            env: DJANGO="==2.1.*"
+          - python: 3.6
+            env: DJANGO="==2.2.*"
+          - python: 3.6
+            env: DJANGO="==3.0.*"
+          - python: 3.6
+            env: DJANGO="==3.1.*"
+          - python: 3.6
+            env: DJANGO="==3.2.*"
+
+          - python: 3.7
+            env: DJANGO="==2.0.*"
+          - python: 3.7
+            env: DJANGO="==2.1.*"
+          - python: 3.7
+            env: DJANGO="==2.2.*"
+          - python: 3.7
+            env: DJANGO="==3.0.*"
+          - python: 3.7
+            env: DJANGO="==3.1.*"
+          - python: 3.7
+            env: DJANGO="==3.2.*"
+
+          - python: 3.8
+            env: DJANGO="==2.0.*"
+          - python: 3.8
+            env: DJANGO="==2.1.*"
+          - python: 3.8
+            env: DJANGO="==2.2.*"
+          - python: 3.8
+            env: DJANGO="==3.0.*"
+          - python: 3.8
+            env: DJANGO="==3.1.*"
+          - python: 3.8
+            env: DJANGO="==3.2.*"
+          - python: 3.8
+            env: DJANGO="==4.0"
+
+          - python: 3.9
+            env: DJANGO="==2.0.*"
+          - python: 3.9
+            env: DJANGO="==2.1.*"
+          - python: 3.9
+            env: DJANGO="==2.2.*"
+          - python: 3.9
+            env: DJANGO="==3.0.*"
+          - python: 3.9
+            env: DJANGO="==3.1.*"
+          - python: 3.9
+            env: DJANGO="==3.2.*"
+          - python: 3.9
+            env: DJANGO="==4.0"
+
+          - os: osx
+            language: generic
+            env: DJANGO="==3.2.*"
 
     steps:
       - name: Install system dependencies (windows)