Merge pull request #137 from NHSDigital/MESH-2341-fix-test-fixture

MESH-2341 fix test fixture

Author: jimasp

nhs_aws_helpers/fixtures.py

@@ -144,7 +144,8 @@ def clone_schema(table, on_demand_billing_mode: bool = True, provisioned_capacit
             del index["IndexSizeBytes"]
             del index["ItemCount"]
             del index["IndexArn"]
-            del index["ProvisionedThroughput"]
+            if "ProvisionedThroughput" in index:
+                del index["ProvisionedThroughput"]
 
     clone = {
         "KeySchema": key_schema,