Update rustix requirement from 0.38 to 1.0 #619

Job	Run time
msrv (1.63)	1m 17s
test (ubuntu-latest, nightly)	57s
clippy	36s
test (ubuntu-latest, beta)	1m 1s
test (ubuntu-latest, stable)	55s
test (windows-latest, nightly)	2m 14s
test (windows-latest, beta)	1m 48s
security_audit / security_audit	2m 37s
test (windows-latest, stable)	1m 57s
test (macos-latest, nightly)	47s
test (macos-latest, beta)	56s
fmt / fmt	6s
test (macos-latest, stable)	48s
	15m 59s

Provide feedback