yaml is a terrible language...

Author: wolph

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     timeout-minutes: 2
     strategy:
       matrix:
-        python-version: [2.7, 3.6, 3.7, 3.8, 3.9, 3.10]
+        python-version: [2.7, 3.6, 3.7, 3.8, 3.9, '3.10']
 
     steps:
     - uses: actions/checkout@v2