fix: two important usage billing fixes

[travis]

1. use a CID as an idempotency key - some Stripe usage billing reporting requests were failing because the space DID was much longer than we expected and the idempotency key cannot be more than 255 characters - we were sending ~450 characters in many cases

2. properly configure the "on failure" queue for the usage table handler - the previous config didn't work, and no "on failure" destination was set for this, which is, I suspect, why we can't find any trace of some usage table insert hook invocations

[seed-deploy]

View stack outputs

• pr460-w3infra-BillingDbStack

  Name	Value
  customerTableName	pr460-w3infra-customer
  egressTrafficTableName	pr460-w3infra-egress-traffic-events
  spaceDiffTableName	pr460-w3infra-space-diff
  spaceSnapshotTableName	pr460-w3infra-space-snapshot
  usageTable	pr460-w3infra-usage

• pr460-w3infra-BillingStack

  Name	Value
  ApiEndpoint	https://23oxie0jr9.execute-api.us-east-2.amazonaws.com
  billingCronHandlerURL	https://kc4a6rjpxxwf7pynkgauebbnzu0rpaip.lambda-url.us-east-2.on.aws/
  CustomDomain	https://pr460.billing.web3.storage
  EgressTrafficQueueURL	https://sqs.us-east-2.amazonaws.com/505595374361/pr460-w3infra-egress-traffic-queue

• pr460-w3infra-CarparkStack

  Name	Value
  BucketName	carpark-pr460-0
  Region	us-east-2

• pr460-w3infra-PSAStack

  Name	Value
  downloadFunctionURL	https://wec4uicqxaurtxaiulb6wjvlrq0cvlrg.lambda-url.us-east-2.on.aws/
  hashFunctionURL	https://qmdwlk6kzojdhhjkdlibkmgmlq0gvqgf.lambda-url.us-east-2.on.aws/

• pr460-w3infra-RoundaboutStack

  Name	Value
  ApiEndpoint	https://vtc7jtf02a.execute-api.us-east-2.amazonaws.com
  CustomDomain	https://pr460.roundabout.web3.storage

• pr460-w3infra-UcanInvocationStack

  Name	Value
  invocationBucketName	invocation-store-pr460-0
  taskBucketName	task-store-pr460-0
  workflowBucketName	workflow-store-pr460-0

• pr460-w3infra-UploadApiStack

  Name	Value
  ApiEndpoints	["https://gilo3mdhk5.execute-api.us-east-2.amazonaws.com","https://yjkq9f5vsi.execute-api.us-east-2.amazonaws.com"]
  CustomDomains	["https://pr460.up.web3.storage","https://pr460.up.storacha.network"]

• pr460-w3infra-BusStack

• pr460-w3infra-FilecoinStack

• pr460-w3infra-IndexerStack

• pr460-w3infra-ReplicatorStack

• pr460-w3infra-UcanFirehoseStack

• pr460-w3infra-UploadDbStack

[BravoNatalie]

LGTM