update lavaplayer to 1.3.99.1

[topi314]

https://github.com/Walkyst/lavaplayer-fork/releases/tag/1.3.99.1

[topi314]

jcenter is having a bad day
remind me to rerun this once it's fixed

optionally we move jcenter below jitpack but we might still pull some dependencies from there

* What went wrong:
Execution failed for task ':plugin-api:compileJava'.
> Could not resolve all files for configuration ':plugin-api:compileClasspath'.
   > Could not resolve com.github.walkyst.lavaplayer-fork:lavaplayer:1.3.99.1.
     Required by:
         project :plugin-api
      > Could not resolve com.github.walkyst.lavaplayer-fork:lavaplayer:1.3.99.1.
         > Could not get resource 'https://jcenter.bintray.com/com/github/walkyst/lavaplayer-fork/lavaplayer/1.3.99.1/lavaplayer-1.3.99.1.pom'.
            > Could not GET 'https://jcenter.bintray.com/com/github/walkyst/lavaplayer-fork/lavaplayer/1.3.99.1/lavaplayer-1.3.99.1.pom'.
               > Read timed out

[topi314]

see https://status.gradle.com/incidents/9740r6bzx438