Support JDK 20 and JDK 21

[Stephan202]

This PR aims to resolve the following error when building with JDK 20 (which I hit while working on PicnicSupermarket/error-prone-support#603):

Jabel: initialized
An exception has occurred in the compiler (20.0.1). Please file a bug against the Java compiler via the Java bug reporting page (https://bugreport.java.com) after checking the Bug Database (https://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.NoSuchFieldError: LAMBDA
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.checkSourceLevel(JavacParser.java:5073)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.term2Rest(JavacParser.java:1002)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.term2(JavacParser.java:957)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.term1(JavacParser.java:925)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:881)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:861)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parseExpression(JavacParser.java:758)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parExpression(JavacParser.java:2554)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parseSimpleStatement(JavacParser.java:2808)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2656)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.blockStatements(JavacParser.java:2593)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2563)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.block(JavacParser.java:2577)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.methodDeclaratorRest(JavacParser.java:4628)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrInterfaceOrRecordBodyDeclaration(JavacParser.java:4491)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classInterfaceOrRecordBody(JavacParser.java:4375)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classDeclaration(JavacParser.java:4077)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.classOrRecordOrInterfaceOrEnumDeclaration(JavacParser.java:4024)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.typeDeclaration(JavacParser.java:4013)
	at jdk.compiler/com.sun.tools.javac.parser.JavacParser.parseCompilationUnit(JavacParser.java:3856)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:634)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:611)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:671)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1020)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler$InitialFileParser.parse(JavaCompiler.java:1940)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:1007)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:933)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
	at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToo

This PR also resolves the following error when using JDK 21:

Caused by: java.lang.IllegalArgumentException: Java 21 (65) is not supported by the current version of Byte Buddy which officially supports Java 20 (64) - update Byte Buddy or set net.bytebuddy.experimental as a VM property
    at net.bytebuddy.utility.OpenedClassReader.of(OpenedClassReader.java:96)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForInlining.create(TypeWriter.java:4011)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$Default.make(TypeWriter.java:2224)
    at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$UsingTypeWriter.make(DynamicType.java:4050)
    at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase.make(DynamicType.java:3734)
    at com.github.bsideup.jabel.JabelCompilerPlugin.lambda$static$0(JabelCompilerPlugin.java:91)
    at java.base/java.util.HashMap.forEach(HashMap.java:1429)
    at com.github.bsideup.jabel.JabelCompilerPlugin.<clinit>(JabelCompilerPlugin.java:84)
    ... 38 more

I hope that this change matches the spirit of what CheckSourceLevelAdvice is meant to do 🤞.

Suggested commit message:

Support JDK 20 and JDK 21 (#177)

From JDK 20 onwards the `LAMBDA` feature enum constant is no longer
recognized. Falling back to the `RECORDS` enum constant should guarantee
support for the next few JDK releases.

Upgrading Byte Buddy from 1.12.18 to 1.14.9 introduces Java 21 byte code
support.

[Stephan202]

@bsideup would you have time to review this small PR?

I'd like to introduce this library in a project that (a.o.) builds against JDK 20 (see PicnicSupermarket/error-prone-support#603), but without these changes our build fails.

[rickie]

It would help us enormously if this PR could be reviewed and merged 😄. Could you take a look at this? @bsideup

[NebelNidas]

At this point, it might be better to switch to https://github.com/RaphiMC/JavaDowngrader

[Stephan202]

Tnx for sharing @NebelNidas! On cursory inspection of that project, it doesn't appear to provide a javac plugin, meaning that it can't "simply" be added to the annotationProcessorPaths of the maven-compiler-plugin. That's probably fixable, though.

@bsideup I'm sure you're super busy; if there's anything else we can do to get this merged/released (perhaps deferring review to another dev you trust with this task?), do let us know. ❤️

[Stephan202]

Rebased and updated the PR (including the PR description). It turns out that JDK 21 compatibility also required upgrading Byte Buddy, so I added that to the change set. As best as I can tell this makes the plugin compatible with JDK 20 and JDK 21.

[bsideup]

Hi everyone! I apologize for missing this PR (thank you @asolntsev for the ping!). I just merged it and will release a new version ASAP.

@Stephan202 thank you for your contribution (and consistency!)

[Stephan202]

Thanks for releasing version 1.0.1, @bsideup! I know Maven Central syncing can take a few hours, and that therefore release may not yet be visible here, but a direct download also yields an HTTP 404 response. Could it be that the artifacts have have yet to be published?

[Stephan202]

Hey @bsideup! I see that the artifact is still not on Maven Central. Can you please have a look? 🙏

[Stephan202]

^ @sergeykad just filed a separate issue for this: #182. (Tnx!)