v1.21.4

What's Changed

• (feat) langfuse set generation_id to chatcmpl-response ID by @ishaan-jaff in #1780

* s3 logger - Improve filename to allow easier sorting by @Manouchehri in https://github.com//pull/1766 * fix(utils.py): override default success callbacks with dynamic callbacks if set by @krrishdholakia in https://github.com//pull/1761 * Litellm security fix allow user auth by @krrishdholakia in https://github.com//pull/1781

Full Changelog: v1.21.1...v1.21.4