Heroku Streaming Data Connector - enable Message Filtering

### Required Terms

- [X] I agree to follow this project's [Code of Conduct](https://github.com/heroku/roadmap/blob/main/CODE_OF_CONDUCT.md)
- [X] I have read and accept the [Salesforce Program Agreement](https://www.salesforce.com/company/program-agreement/)

### What service(s) is this request for?

_No response_

### Tell us about what you're trying to solve. What challenges are you facing?

Every data change event is notified, but in many cases, only specific operations (e.g. INSERT(s) or UPDATE(s) ...) or only a subset of the events emitted are of interest, requiring the consumers to receive many unwanted events and filtering those. [Message Filtering](https://debezium.io/documentation/reference/stable/transformations/filtering.html) would be useful for such cases.