Test for python 3.10

Author: kiendang

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         jdk: [8]
-        python: [3.7, 3.8, 3.9]
+        python: [3.8, 3.9, "3.10"]
     steps:
       - uses: actions/checkout@master
       - uses: coursier/cache-action@v6.3