build(deps): bump kira from 0.8.7 to 0.9.4 #699

Job	Run time
incremental-mutants	27s
lint (stable)	2m 35s
deny	42s
lint (nightly)	2m 20s
build (ubuntu, stable, locked, true)	5m 14s
lint (beta)	2m 32s
miri	1m 31s
build (windows, stable, locked, false)	8m 2s
build (macos, stable, locked, false)	3m 21s
no_std	45s
build (ubuntu, nightly, locked, false)	3m 31s
build (ubuntu, beta, locked, false)	3m 58s
build (ubuntu, stable, latest, false)	4m 14s
build (ubuntu, stable, minimal, false)	2m 15s
features	0s
fuzz	0s
deploy	0s
	41m 27s

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