Java 11 compatibility

[NotKili]

Terms

• [X] I'm using the very latest version of CosmeticsCore and its dependencies.
• [X] I already searched on this Github page to check if the same suggestion was already reported.
• [X] I already searched on the plugin wiki to know if the feature is already implemented.
• [X] I already searched on the Discord server to know if anyone already has a solution for this or if the feature was already suggested.

Discord tag (optional)

notkili

Describe the solution you'd like

A version of this plugin compiled against Java11

Is your feature request related to a problem?

We run our server on Java11, Java16 causes a lot of compatibility issues with other plugins and is therefore no option. Updating all other plugins is no option due to the sheer amount of work.

Describe alternatives you've considered

Commissioning a new cosmetics plugin or updating all other plugins

Additional context

No response

[LoneDev6]

Post the error you're getting, a full log would be preferred