Setup Redshift Accounts for Integration Testing

[AdamHaffar]

Redshift PR requires instance setup to pass integration testing for the redshift connector (1.21).

[hariso]

I haven't used this myself, but it's promising (running a Redshift compatible service locally): https://docs.localstack.cloud/user-guide/aws/redshift/

[lovromazgon]

Yeah, we should definitely try to use localstack, we also use it in the Kinesis connector.

[lovromazgon]

Closing as duplicate of https://github.com/conduitio-labs/conduit-connector-redshift/issues/58.