Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When you publish an event to an event bus, you can send a "detail" field larger than the maximum currently allowed by AWS (256Kb, see here)

Expected Behavior

It should be rejected

How are you starting LocalStack?

Custom (please describe below)

Steps To Reproduce

I'm starting localstack using test containers with the following configuration:

"SERVICES":                 "sqs,events,
"PROVIDER_OVERRIDE_EVENTS": "v2",

Environment

- OS:
- LocalStack:
  LocalStack version:
  LocalStack Docker image sha:
  LocalStack build date:
  LocalStack build git hash:

Anything else?

I think i have a possible fix, but i'm not fully sure