Bump nix from 0.27.1 to 0.28.0 #2817

Job	Run time
Check (stable)	1m 1s
Clippy	1m 6s
Check (1.70.0)	1m 5s
Cross (aarch64-linux-android)	1m 55s
Deny (advisories)	24s
Cross (aarch64-unknown-linux-gnu)	1m 55s
Documentation	58s
Deny (bans licenses sources)	24s
Cross (aarch64-unknown-linux-musl)	1m 52s
Format	43s
Hack	1m 6s
Lint markdown files	48s
Tools	2m 27s
Tests	2m 16s
	18m 0s

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