build(deps): bump com.fasterxml.jackson.core:jackson-core from 2.19.2 to 2.21.1 in /samples/client/echo_api/java/resttemplate

build(deps): bump com.fasterxml.jackson.core:jackson-core from 2.19.2 to 2.21.1 in /samples/client/echo_api/java/resttemplate #17947