[tagpr] update CHANGELOG.md

Author: github-actions[bot]

CHANGELOG.md

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+# Changelog
+
+## [v0.2.0](https://github.com/launchableinc/openai-java/compare/v0.1.0...v0.2.0) - 2024-03-07
+- Introduce tag pr by @Konboi in https://github.com/launchableinc/openai-java/pull/4
+- Support json mode by @Konboi in https://github.com/launchableinc/openai-java/pull/6
+- change next version by @Konboi in https://github.com/launchableinc/openai-java/pull/7
+
+## [v0.1.0](https://github.com/launchableinc/openai-java/commits/v0.1.0) - 2024-03-06
+- fix indent and version by @Konboi in https://github.com/launchableinc/openai-java/pull/1
+- Fix some points by @Konboi in https://github.com/launchableinc/openai-java/pull/2
+- Fix something by @Konboi in https://github.com/launchableinc/openai-java/pull/3