Update spotless.plugin to v8.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.diffplug.spotless	8.3.0 → 8.4.0
com.diffplug.spotless:spotless-plugin-gradle	8.3.0 → 8.4.0

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[yschimke]

* What went wrong:
Execution failed for task ':samples:guide:lintAnalyzeJvmMain'.
> A failure occurred while executing com.android.build.gradle.internal.lint.AndroidLintWorkAction
   > Unexpected failure during lint analysis (this is a bug in lint or one of the libraries it depends on)
     
     Message: Unexpected failure during lint analysis (this is a bug in lint or one of the libraries it depends on)
     
     Message: Unexpected failure during lint analysis of Progress.java (this is a bug in lint or one of the libraries it depends on)
     
     Message: Metaspace
     Stack: \\\`OutOfMemoryError:ClassLoader.defineClass1(ClassLoader.java:-2)←ClassLoader.defineClass(ClassLoader.java:1027)←SecureClassLoader.defineClass(SecureClassLoader.java:150)←URLClassLoader.defineClass(URLClassLoader.java:524)←URLClassLoader$1.run(URLClassLoader.java:427)←URLClassLoader$1.run(URLClassLoader.java:421)←AccessController.executePrivileged(AccessController.java:809)←AccessController.doPrivileged(AccessController.java:714)←URLClassLoader.findClass(URLClassLoader.java:420)←ClassLoader.loadClass(ClassLoader.java:593)←ClassLoader.loadClass(ClassLoader.java:526)←JavaElementType.lambda$static$8(JavaElementType.java:95)←JavaElementType$$Lambda/0x00007f2e28802f30.get(null:-1)←BasicJavaElementType$JavaCompositeElementType.createCompositeNode(BasicJavaElementType.java:267)←ASTFactory.composite(ASTFactory.java:61)←NodeData.createComposite(NodeData.kt:88)←NodeData.bind(NodeData.kt:115)←PsiSyntaxBuilderImpl.getTreeBuilt(PsiSyntaxBuilderImpl.kt:103)←BasicJavaElementType$FrontBackICodeBlockElementType.parseContents(BasicJavaElementType.java:327)←LazyParseableElement.lambda$ensureParsed$2(LazyParseableElement.java:183)←LazyParseableElement$$Lambda/0x00007f2e289fded8.run(null:-1)←DebugUtil.performPsiModification(DebugUtil.java:570)←LazyParseableElement.ensureParsed(LazyParseableElement.java:182)←LazyParseableElement.getFirstChildNode(LazyParseableElement.java:234)←PsiImplUtil.getChildStatements(PsiImplUtil.java:634)←PsiCodeBlockImpl.getStatements(PsiCodeBlockImpl.java:44)←JavaUCodeBlockExpression.getExpressions(JavaUCodeBlockExpression.kt:31)←UBlockExpression.accept(UBlockExpression.kt:21)←UMethod.accept(UMethod.kt:45)←ImplementationUtilsKt.acceptList(implementationUtils.kt:15)←UClass.accept(UClass.kt:64)←UObjectLiteralExpression.accept(UObjectLiteralExpression.kt:42)\\\`

[renovate]

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