[JENKINS-71805] GitHub tests fail on Java 21

[basil]

The following GitHub tests fail on Java 21:

• com.cloudbees.jenkins.GitHubPushTriggerTest
• com.cloudbees.jenkins.GitHubWebHookFullTest
• org.jenkinsci.plugins.github.config.GitHubPluginConfigTest
• org.jenkinsci.plugins.github.config.GitHubServerConfigIntegrationTest
• org.jenkinsci.plugins.github.webhook.subscriber.DefaultPushGHEventListenerTest

The stack trace is:

java.lang.IllegalArgumentException: Unsupported class file major version 65
	at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:199)
	at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:180)
	at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:166)
	at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:287)
	at org.codehaus.groovy.ast.decompiled.AsmDecompiler.parseClass(AsmDecompiler.java:83)
	at org.codehaus.groovy.control.ClassNodeResolver.findDecompiled(ClassNodeResolver.java:255)
	at org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:193)
	at org.codehaus.groovy.control.ClassNodeResolver.findClassNode(ClassNodeResolver.java:175)
	at org.codehaus.groovy.control.ClassNodeResolver.resolveName(ClassNodeResolver.java:129)
	at org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveClassNullable(AsmReferenceResolver.java:57)
	at org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveClass(AsmReferenceResolver.java:44)
	at org.codehaus.groovy.ast.decompiled.ClassSignatureParser.configureClass(ClassSignatureParser.java:49)
	at org.codehaus.groovy.ast.decompiled.DecompiledClassNode.lazyInitSupers(DecompiledClassNode.java:189)
	at org.codehaus.groovy.ast.decompiled.DecompiledClassNode.getInterfaces(DecompiledClassNode.java:154)
	at org.codehaus.groovy.control.ResolveVisitor.checkCyclicInheritance(ResolveVisitor.java:1373)
	at org.codehaus.groovy.control.ResolveVisitor.visitClass(ResolveVisitor.java:1314)
	at org.codehaus.groovy.control.ResolveVisitor.startResolving(ResolveVisitor.java:258)
	at org.codehaus.groovy.control.CompilationUnit.lambda$addPhaseOperations$3(CompilationUnit.java:207)
	at org.codehaus.groovy.control.CompilationUnit$ISourceUnitOperation.doPhaseOperation(CompilationUnit.java:896)
Caused: BUG! exception in phase 'semantic analysis' in source unit 'WorkflowScript' Unsupported class file major version 65
	at org.codehaus.groovy.control.CompilationUnit$ISourceUnitOperation.doPhaseOperation(CompilationUnit.java:900)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:692)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:666)
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:373)
	at groovy.lang.GroovyClassLoader.lambda$parseClass$2(GroovyClassLoader.java:316)
	at org.codehaus.groovy.runtime.memoize.StampedCommonCache.compute(StampedCommonCache.java:163)
	at org.codehaus.groovy.runtime.memoize.StampedCommonCache.getAndPut(StampedCommonCache.java:154)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:314)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox$Scope.parse(GroovySandbox.java:163)
	at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:190)
	at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:175)
	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:563)
	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:513)
	at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:336)
	at hudson.model.ResourceController.execute(ResourceController.java:101)
	at hudson.model.Executor.run(Executor.java:442)

This PR fixes the problem by upgrading to the latest dependencies, after which all tests pass on Java 11, 17, and 21.

Testing done

Ran the tests on Java 11, 17, and 21. Before this PR, Java 21 failed. After this PR, all Java versions are passing.

[basil]

@KostyaSha Thanks! Could this please be released for BOM/PCT testing purposes?