chore(deps-rs): bump bytemuck from 1.20.0 to 1.21.0 in the minor group #2468

Job	Run time
Check for changes	3s
Check Rust code 🦀	1m 24s
tests (Rust nightly, coverage)	2m 42s
Build benchmarks 🏋️	4m 38s
Check Python code 🐍	1m 47s
tests (Python, coverage)	1m 52s
tests (Rust 1.75)	2m 35s
tests (Rust stable, all features)	2m 5s
tests (Rust beta)	2m 28s
tests (Rust stable, no features)	2m 5s
Check standard extensions	44s
Required checks 🦀+🐍	1s
	22m 24s

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