update

Author: akihironitta

.github/workflows/testing.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-2019]
+        os: [ubuntu-latest, windows-2022]
         python-version: [3.9]
         torch-version: [2.7.0, 2.8.0]