bump dependencies and update version to 0.15.0 (#21)

- Updated axum from 0.8.4 to 0.8.6
- Updated tokio from 1.36.0 to 1.47.1
- Updated serde from 1.0.219 to 1.0.228
- Updated serde_json from 1.0.114 to 1.0.145
- Updated uuid from 1.18.0 to 1.18.1
- Updated futures-util from 0.3.30 to 0.3.31
- Updated tracing from 0.1.40 to 0.1.41
- Updated tracing-subscriber from 0.3.18 to 0.3.20
- Updated thiserror from 1.0.57 to 1.0.69
- Updated async-stream from 0.3.5 to 0.3.6
- Updated pin-project from 1.1.3 to 1.1.10

Author: lenoxys