Update badges (#357)

Author: jonesbusy

README.md

@@ -7,7 +7,7 @@
 [![Javadoc](https://img.shields.io/badge/javadoc-latest-blue)](https://oras-project.github.io/oras-java/)
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/oras-project/oras-java/badge)](https://scorecard.dev/viewer/?uri=github.com/oras-project/oras-java)
 [![OpenSSF Best Practices](https://www.bestpractices.dev/projects/10047/badge)](https://www.bestpractices.dev/projects/10047)
-[![Reproducible Central Artifact](https://img.shields.io/reproducible-central/artifact/land.oras/oras-java-sdk/0.2.12)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/land/oras/oras-java-sdk/README.md)
+[![Reproducible Central Artifact](https://img.shields.io/reproducible-central/artifact/land.oras/oras-java-sdk/0.2.15)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/land/oras/oras-java-sdk/README.md)
 
 
 > [!WARNING]