Version 4.x is JDK17 LTS bytecode compatible, with Docker and JUnit / direct Java integration.

• Features and fixes
  • Implement DeleteObjectTagging API
• Refactorings
  • Add JSpecify annotations to S3Mock code
  • Migrate unit tests in "testsupport" modules to Kotlin
  • Deprecation of legacy-style Spring properties in favor of current environment variables.
  • Various fixes and clarifications in README.md
• Version updates (deliverable dependencies)
  • Bump alpine from 3.21.3 to 3.22.0 in /docker
  • Bump aws-v2.version from 2.31.50 to 2.31.67
  • Bump aws.version from 1.12.783 to 1.12.787
  • Bump spring-boot.version from 3.5.0 to 3.5.3
  • Bump testcontainers.version from 1.21.0 to 1.21.2
• Version updates (build dependencies)
  • Bump aws.sdk.kotlin:s3-jvm from 1.4.91 to 1.4.109
  • Bump org.xmlunit:xmlunit-assertj3 from 2.10.2 to 2.10.3
  • Bump org.codehaus.mojo:exec-maven-plugin from 3.5.0 to 3.5.1
  • Bump org.apache.maven.plugins:maven-clean-plugin from 3.4.1 to 3.5.0
  • Bump com.puppycrawl.tools:checkstyle from 10.24.0 to 10.25.0
  • Bump maven from 3.9.6 to 3.9.9
  • Bump maven-wrapper from 3.2.0 to 3.3.2
  • Bump ossf/scorecard-action from 2.4.1 to 2.4.2
  • Bump github/codeql-action from 3.28.18 to 3.29.0
  • Bump step-security/harden-runner from 2.12.0 to 2.12.1

What's Changed

• Bump org.codehaus.mojo:exec-maven-plugin from 3.5.0 to 3.5.1 by @dependabot in #2415
• Bump ossf/scorecard-action from 2.4.1 to 2.4.2 by @dependabot in #2420
• Bump alpine from 3.21.3 to 3.22.0 in /docker by @dependabot in #2421
• Bump testcontainers.version from 1.21.0 to 1.21.1 by @dependabot in #2423
• Update Maven to 3.9.9, Wrapper to 3.3.2 by @afranken in #2425
• Bump com.puppycrawl.tools:checkstyle from 10.24.0 to 10.25.0 by @dependabot in #2427
• Bump org.apache.maven.plugins:maven-clean-plugin from 3.4.1 to 3.5.0 by @dependabot in #2429
• Bump github/codeql-action from 3.28.18 to 3.28.19 by @dependabot in #2433
• Bump aws.version from 1.12.783 to 1.12.785 by @dependabot in #2437
• Bump step-security/harden-runner from 2.12.0 to 2.12.1 by @dependabot in #2446
• Bump github/codeql-action from 3.28.19 to 3.29.0 by @dependabot in #2447
• Changelog for 4.5.0 by @afranken in #2452
• Re-enable dependency based JRE by @afranken in #2434
• Nullability annotations, JavaDoc, refactorings by @afranken in #2456
• Bump spring-boot.version from 3.5.0 to 3.5.2 by @dependabot in #2464
• Bump org.xmlunit:xmlunit-assertj3 from 2.10.2 to 2.10.3 by @dependabot in #2465
• Bump testcontainers.version from 1.21.1 to 1.21.2 by @dependabot in #2463
• Bump spring-boot.version from 3.5.2 to 3.5.3 by @dependabot in #2469
• Bump aws.version from 1.12.785 to 1.12.787 by @dependabot in #2455
• Bump aws-v2.version from 2.31.50 to 2.31.67 by @dependabot in #2467
• Bump aws.sdk.kotlin:s3-jvm from 1.4.91 to 1.4.109 by @dependabot in #2468
• Deprecate legacy properties, README fixes. by @afranken in #2470

Full Changelog: 4.4.0...4.5.0