updated patch

Author: Rajat Agrawal

Tasks/AzurePowerShellV2/task.json

@@ -17,7 +17,7 @@
     "version": {
         "Major": 2,
         "Minor": 1,
-        "Patch": 3
+        "Patch": 4
     },
     "demands": [
         "azureps"