Add many python versions for auto build

Author: thanhtung09t2

.github/workflows/tests.yml

@@ -16,13 +16,15 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python 3.10
       uses: actions/setup-python@v3
       with:
-        python-version: "3.10"
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip