fix(deps): update rust crate log to 0.4.21

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
log	dependencies	patch	0.4.20 -> 0.4.21

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Release Notes

rust-lang/log (log)

### [`v0.4.21`](https://togithub.com/rust-lang/log/blob/HEAD/CHANGELOG.md#0421---2024-02-27) [Compare Source](https://togithub.com/rust-lang/log/compare/0.4.20...0.4.21)

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