fixed missing quote in ci matrix

Author: eadwinCode

.github/workflows/test_full.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
         django-version: ['<3.0', '<3.1', '<3.2', '<3.3', '<4.1', '<4.2']
 
     steps: