chore: prepare tracing 0.1.43 (#3427)

# 0.1.43 (November 28, 2025)

#### Important

The previous release [0.1.42] was yanked because [#3382] was a breaking change.
See further details in [#3424]. This release contains all the changes from that
version, plus a revert for the problematic part of the breaking PR.

### Fixed

- Revert "make `valueset` macro sanitary" ([#3425])

[#3382]: https://github.com/tokio-rs/tracing/pull/3382
[#3424]: https://github.com/tokio-rs/tracing/pull/3424
[#3425]: https://github.com/tokio-rs/tracing/pull/3425
[0.1.42]: https://github.com/tokio-rs/tracing/releases/tag/tracing-0.1.42