Breaks with early-access "-ea" suffixes on Java versions

[Justsnoopy30]

Exception in thread "main" java.lang.ExceptionInInitializerError
	at io.github.coolcrabs.brachyura.project.BuildscriptProject.getBuildscriptClassLoader(BuildscriptProject.java:102)
	at io.github.coolcrabs.brachyura.project.BuildscriptProject.createProject(BuildscriptProject.java:83)
	at io.github.coolcrabs.brachyura.util.Lazy.maybeCompute(Lazy.java:25)
	at io.github.coolcrabs.brachyura.util.Lazy.get(Lazy.java:20)
	at io.github.coolcrabs.brachyura.project.BrachyuraEntry.main(BrachyuraEntry.java:37)
	at io.github.coolcrabs.brachyura.bootstrap.Main.main(Main.java:74)
Caused by: java.lang.NumberFormatException: For input string: "18-ea"
	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
	at java.base/java.lang.Integer.parseInt(Integer.java:668)
	at java.base/java.lang.Integer.parseInt(Integer.java:784)
	at io.github.coolcrabs.brachyura.util.JvmUtil.<clinit>(JvmUtil.java:26)
	... 6 more```