Update Rust crate which to v6.0.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
which	dependencies	patch	6.0.2 -> 6.0.3

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Release Notes

harryfei/which-rs (which)

### [`v6.0.3`](https://togithub.com/harryfei/which-rs/blob/HEAD/CHANGELOG.md#603) [Compare Source](https://togithub.com/harryfei/which-rs/compare/6.0.2...6.0.3) - Enhance `tracing` feature with some `debug` level logs for higher level logic.

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