Checkmk Werk 14687: Fixed JSON encoding outside the BMP for Livestatus

ID: 14687 Title: Fixed JSON encoding outside the BMP for Livestatus Component: Livestatus Level: 1 Class: Bug fix Version: 2.2.0i1 Livestatus used an incorrect way of encoding Unicode characters outside of the Basic Multilingual Plane (BMP) for the JSON output format. This affected characters like e.g. emojis, various symbols, characters from ancient languages, etc.