GHSA-92JH-GWCH-JQ38 PocketMine-MP server crash with certain invalid JSON payloads in `LoginPacket` due to dependency vulnerability (again)

Impact An attacker could crash PocketMine-MP by sending malformed JSON in LoginPacket. This happened due to the particular handling of NULL types in the json mapper which accepts NULL type values in typed arrays which PocketMine-MP did not expect. Code processing arrays in the JSON data could the...