Bump github.com/docker/docker from 26.1.0+incompatible to 28.0.0+incompatible in /samples/deployment/fabric-smart-client/the-simple-testing-network

Bump github.com/docker/docker from 26.1.0+incompatible to 28.0.0+incompatible in /samples/deployment/fabric-smart-client/the-simple-testing-network #228