Is your feature request related to a problem? Please describe.
Unable to run data prepper locally in a docker container pointing to a glue schema registry in another docker container (motoserver)

Describe the solution you'd like
All that is necessary for the support is to allow specifying the AWS registry url and populating AWSSchemaRegistryConstants.AWS_ENDPOINT in the configuration if it is specified

Describe alternatives you've considered (Optional)
At this point I don't know of any way to be able to consume messages from a local kafka with a local aws glue schema registry

Additional context
Add any other context or screenshots about the feature request here.