Ilias

Camunda throws an `org.camunda.bpm.engine.MismatchingMessageCorrelationException` exception when `businessKey` field in `POST /message` is an empty string. `BusinessKey` field in `ReqMessage` struct in `message.go` should have `omitempty` for it work properly.

## Scoop version ```powershell > scoop --version Current Scoop version: 859d1db5 (HEAD -> master, tag: v0.5.2, origin/master, origin/HEAD) chore(release): Bump to version 0.5.2 (#6080) 'main' bucket: c237f510a (HEAD -> master,...