classifier is deprecated in favor of archiveClassifier - eg: https://…

[s50600822]

This should fix the issue in update-gradle-wrapper: https://github.com/Netflix/conductor/actions/runs/6870985189/job/18686956908

  Error: ❌ FAILURE: Build failed with an exception.
  
  * Where:
  Build file '/home/runner/work/conductor/conductor/server/build.gradle' line: 62
  
  * What went wrong:
  A problem occurred evaluating project ':conductor-server'.
  > Could not set unknown property 'classifier' for task ':conductor-server:bootJar' of type org.springframework.boot.gradle.tasks.bundling.BootJar.

Pull Request type

• Build related changes (Please run ./gradlew generateLock saveLock to refresh dependencies)

Changes in this PR

One of the necessary updates toward Gradle 8
eg: https://github.com/spring-projects/spring-boot/pull/29611/files
Alternatives considered

See also:

1. deprecated since 5.1 - spring-boot-gradle-plugin docs use deprecated Gradle API spring-projects/spring-boot#29610
2. will be removed in 8 - https://docs.gradle.org/current/userguide/upgrading_version_7.html where classifier is listed to be removed (replaced by to archiveClassifier)

The deprecated appendix, archiveName, archivePath, baseName, classifier, destinationDir, extension and version properties of the AbstractArchiveTask task type have been removed. Use the archiveAppendix, archiveFileName , archiveFile, archiveBaseName, archiveClassifier, destinationDirectory, archiveExtension and archiveVersion properties instead.

3. from gradle src: https://github.com/gradle/gradle/pull/22107/files#diff-1c2c4263cffdda364f17c6f3dee6540bbe13d53a38a2814bcb2723fa7c1b3821

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