updating unit tests for py3.10

Author: allmightyspiff

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7,3.8,3.9,3.10]
+        python-version: [3.7,3.8,3.9,'3.10']
 
     steps:
     - uses: actions/checkout@v2