Fix: [AEA-4488] - Gives filter unique name (#1348)

## Summary

- Routine Change

### Details

Gives filter unique name to fix deployments

Author: JackSpagnoliNHS

SAMtemplates/alarms/main.yaml

@@ -87,7 +87,7 @@ Resources:
   GetMyPrescriptionsErrorsLogsMetricFilter:
     Type: AWS::Logs::MetricFilter
     Properties:
-      FilterName: GetMyPrescriptionsErrors
+      FilterName: !Sub ${StackName}_GetMyPrescriptionsErrors
       FilterPattern: !Sub '{ ($.level = "ERROR") && ($.function_name = "${GetMyPrescriptionsFunctionName}") && ($.message != %error in request to serviceSearch%) }'
       LogGroupName:
         Fn::ImportValue: !Sub ${StackName}:functions:${GetMyPrescriptionsFunctionName}:LambdaLogGroupName
@@ -128,7 +128,7 @@ Resources:
   EnrichPrescriptionsErrorsLogsMetricFilter:
     Type: AWS::Logs::MetricFilter
     Properties:
-      FilterName: EnrichPrescriptionsErrors
+      FilterName: !Sub ${StackName}_EnrichPrescriptionsErrors
       FilterPattern: ERROR
       LogGroupName:
         Fn::ImportValue: !Sub ${StackName}:functions:${EnrichPrescriptionsFunctionName}:LambdaLogGroupName