DEVX-2077:  multi-region cluster demo: pin images to 5.5.1-post for tc support (#791)
DEVX-2077:  multi-region cluster demo: pin images to 5.5.1-post for tc support (#791)


confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples,confluentinc/examples