trying to set .net version to see if tests pass

Author: aishwaryabh

global.json

@@ -0,0 +1,11 @@
+{
+    "sdk": {
+      "version": "9.0.106",
+      "allowPrerelease": true,
+      "rollForward": "latestFeature"
+    },
+    "msbuild-sdks": {
+      "Microsoft.Build.NoTargets": "3.7.56",
+      "Microsoft.Build.Traversal": "4.1.0"
+    }
+  }