build(deps): bump log from 0.4.20 to 0.4.21

[dependabot[bot]]

Bumps log from 0.4.20 to 0.4.21.

Changelog

Sourced from log's changelog.

[0.4.21] - 2024-02-27

What's Changed

• Minor clippy nits by @​nyurik in rust-lang/log#578
• Simplify Display impl by @​nyurik in rust-lang/log#579
• Set all crates to 2021 edition by @​nyurik in rust-lang/log#580
• Various changes based on review by @​Thomasdezeeuw in rust-lang/log#583
• Fix typo in file_static() method doc by @​dimo414 in rust-lang/log#590
• Specialize empty key value pairs by @​EFanZh in rust-lang/log#576
• Fix incorrect lifetime in Value::to_str() by @​peterjoel in rust-lang/log#587
• Remove some API of the key-value feature by @​Thomasdezeeuw in rust-lang/log#585
• Add logcontrol-log and log-reload by @​swsnr in rust-lang/log#595
• Add Serialization section to kv::Value docs by @​Thomasdezeeuw in rust-lang/log#593
• Rename Value::to_str to to_cow_str by @​Thomasdezeeuw in rust-lang/log#592
• Clarify documentation and simplify initialization of STATIC_MAX_LEVEL by @​ptosi in rust-lang/log#594
• Update docs to 2021 edition, test by @​nyurik in rust-lang/log#577
• Add "alterable_logger" link to README.md by @​brummer-simon in rust-lang/log#589
• Normalize line ending by @​EFanZh in rust-lang/log#602
• Remove ok_or in favor of Option::ok_or by @​AngelicosPhosphoros in rust-lang/log#607
• Use Acquire ordering for initialization check by @​AngelicosPhosphoros in rust-lang/log#610
• Get structured logging API ready for stabilization by @​KodrAus in rust-lang/log#613

New Contributors

• @​nyurik made their first contribution in rust-lang/log#578
• @​dimo414 made their first contribution in rust-lang/log#590
• @​peterjoel made their first contribution in rust-lang/log#587
• @​ptosi made their first contribution in rust-lang/log#594
• @​brummer-simon made their first contribution in rust-lang/log#589
• @​AngelicosPhosphoros made their first contribution in rust-lang/log#607

Commits

• 3ccdc28 Merge pull request #617 from rust-lang/cargo/0.4.21
• 6153cb2 prepare for 0.4.21 release
• f0f7494 Merge pull request #613 from rust-lang/feat/kv-cleanup
• 2b220bf clean up structured logging example
• 646e9ab use original Visitor name for VisitValue
• cf85c38 add needed subfeatures to kv_unstable
• 73e9539 fix up capturing of :err
• 31bb4b0 move error macros together
• ad91711 support field shorthand in macros
• 90a347b restore removed APIs as deprecated
• Additional commits viewable in compare view

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