Add retry for Lambda rate exceeded error

[awfm9]

We currently do not retry on some Lambda errors where we should:

{"level":"error","error":"could not invoke lambda: operation error Lambda: Invoke, exceeded maximum number of attempts, 3, https response error StatusCode: 429, RequestID: 2ba7f96a-0efc-48a7-ae77-96c70a0dc89f, TooManyRequestsException: Rate Exceeded.","time":"2022-06-27T20:28:30Z","message":"could not process message, discarding"}