4 shards for both windows and ubuntu

Author: AbhiPrasad

.github/workflows/py.yaml

@@ -22,7 +22,7 @@ jobs:
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest, windows-latest]
-        shard: [0, 1]
+        shard: [0, 1, 2, 3]
 
     steps:
       - uses: actions/checkout@v4