fix: allow s3:ListBucket to the proper prefix for failed_events

Author: tyrcho

aws/logs_monitoring/template.yaml

@@ -755,7 +755,7 @@ Resources:
                     Condition:
                       StringLike:
                         s3:prefix:
-                          - "retry/*"
+                          - "failed_events/*"
                           - "log-group-cache/*"
                     Effect: Allow
                   - Ref: AWS::NoValue