* Switch to latest Jaeger and improve the spans

* Update node/jaeger/src/lib.rs

Co-authored-by: Robert Habermeier <rphmeier@gmail.com>

* Use better span in bitfield signing

* Update node/core/bitfield-signing/src/lib.rs

Co-authored-by: Andronik Ordian <write@reusable.software>

Co-authored-by: Robert Habermeier <rphmeier@gmail.com>
Co-authored-by: Andronik Ordian <write@reusable.software>