Update OperationNameValue comparison operator

The OperationNameValue is sometimes mixed lower and uppercase. The lower case value drastically limits the number of results and overlooks the mixed case values of  "Microsoft.Storage/storageAccounts/listKeys/action". Using the =~ operator accommodates the mixed case values.

Hunting Queries/AzureActivity/Anomalous_Listing_Of_Storage_Keys.yaml

@@ -20,11 +20,11 @@ relevantTechniques:
 query: |
 
   AzureActivity
-  | where OperationNameValue == "microsoft.storage/storageaccounts/listkeys/action"
+  | where OperationNameValue =~ "microsoft.storage/storageaccounts/listkeys/action"
   | where ActivityStatusValue == "Succeeded" 
   | join kind= inner (
       AzureActivity
-      | where OperationNameValue == "microsoft.storage/storageaccounts/listkeys/action"
+      | where OperationNameValue =~ "microsoft.storage/storageaccounts/listkeys/action"
       | where ActivityStatusValue == "Succeeded" 
       | project ExpectedIpAddress=CallerIpAddress, Caller 
       | evaluate autocluster()