refactor: make callback address URI#55

ronjaquensel merged 1 commit intoeclipse-dataplane-core:maineclipse-dataplane-core/dataplane-sdk-java:mainfrom

FraunhoferISST:refactor/callback-address-uriFraunhoferISST/dataplane-sdk-java:refactor/callback-address-uriCopy head branch name to clipboard