fix: Upgrade pprof to fix RUSTSEC-2024-0408 (#11730)
## Summary
- Upgrades `pprof` from 0.12.1 to 0.15.0 to fix RUSTSEC-2024-0408
(unsound `from_raw_parts` usage)
- Fixes a prost version conflict: pprof 0.15.0 bundles prost 0.12.x
internally while the workspace uses prost 0.13.x. Changed `use
prost::Message` to `use pprof::protos::Message` in `tracing.rs` to use
pprof's re-export
Resolves TURBO-5250
