Bit of a quick update, this is mostly just bugfixes.

* Elaborated on some descriptions of the display disguises for /dhelp
* Fixed the protocollib link having changed
* Fixed incorrect version of ProtocolLib being required
* Fixed an issue for 1.12 servers
* Swallow exceptions for outdated 1.19.4 servers to allow the plugin to use
* Attempt to make scoreboards slightly less laggy
* Fixed older versions of servers throwing errors for self disguises
* Added protocollib update message to use permission "libsdisguises.update"