Remove python 3.6 from test suite for now.

The tests fail because of an issue with circular imports which was fixed in python 3.7 (https://bugs.python.org/issue30024)

Author: chr1st1ank

.github/workflows/code_quality.yml

@@ -37,7 +37,7 @@ jobs:
     strategy:
       max-parallel: 3
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     steps:
       - name: Set up Python ${{ matrix.python-version }}