update python version

Author: lheagy

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.10"]
+        python-version: ["3.11"]
         test_file: [
           "tests/test_dcip.py",
           "tests/test_em.py",