Update lint.yml

Author: jackton1

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
+        python-version: [3.6, 3.7, 3.8, 3.9, '3.10']
 
     steps:
       - uses: actions/checkout@v2