Exception during update check while running in read only docker environment

[Exceptionflug]

Describe the bug
A massive exception get's printed every time the server starts.

To Reproduce
Steps to reproduce the behavior:

1. Create a minecraft server inside an docker image with ProtocolLib installed. The plugin directory needs to be inside the image and must not be in a volume.
2. Start the server and enjoy the exception.

Expected behavior
Normal startup or a minimal log message, that automatic update checks have failed.

Screenshots
Part of Server Log: http://paste.cytooxien.de/xifayujofi.md

Version Info
/protocol dump:

[12:12:37 ERROR]: [ProtocolLib] Failed to create dump:
java.io.IOException: Read-only file system

But it is ProtocolLib 4.6.0 downloaded from spigotmc.org ;)

Additional context
Maybe add an option to completely disable update checks.

[MiniDigger]

not sure this is really an issue. you deny the plugin to write to its own config file, of course that will lead to unexpected behavior. I bet any other plugin behaves the same way here.

I mean, it would be possible to more gracefully handle this here with a writeable check
https://github.com/dmulloy2/ProtocolLib/blob/master/src/main/java/com/comphenix/protocol/ProtocolConfig.java#L134
but any bukkit plugin expects its data folder to be writeable...

[Exceptionflug]

Not in that use case. I would really like to let the plugin write it's file, but this is not possible without adding a volume to the plugin folder which I can't do since this is a Pterodactyl managed container.