deps: bump nix from 0.28.0 to 0.29.0 in the cargo group #89

Job	Run time
Fmt check	6s
Test on macos with Rust stable (feat: tokio1)	1m 1s
Test on macos with Rust stable (feat: std)	52s
Test on macos with Rust 1.75.0 (feat: tokio1)	56s
Test on macos with Rust 1.75.0 (feat: std)	1m 6s
Test on ubuntu with Rust stable (feat: tokio1)	42s
Test on ubuntu with Rust stable (feat: std)	43s
Test on ubuntu with Rust 1.75.0 (feat: tokio1)	49s
Test on ubuntu with Rust 1.75.0 (feat: std)	51s
Test on windows with Rust stable (feat: tokio1)	2m 28s
Test on windows with Rust stable (feat: std)	2m 28s
Test on windows with Rust 1.75.0 (feat: tokio1)	1m 49s
Test on windows with Rust 1.75.0 (feat: std)	1m 48s
	15m 39s

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