Update testing.yml

Author: MMathisLab

.github/workflows/testing.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.11"]
+        python-version: ["3.10"]
         include:
           - os: ubuntu-latest
             path: ~/.cache/pip