Update hermit-abi requirement from 0.3.9 to 0.4.0 #904

Job	Run time
fmt	13s
msrv (ubuntu-latest)	52s
clippy	9s
msrv (windows-latest)	1m 21s
cross (ubuntu-latest, nightly)	2m 21s
security_audit	5s
cross (ubuntu-latest, stable)	1m 27s
cross (macos-latest, nightly)	2m 41s
wine	2m 43s
test (ubuntu-latest, nightly)	1m 39s
cross (macos-latest, stable)	2m 48s
test (ubuntu-latest, beta)	1m 34s
test (ubuntu-latest, stable)	1m 39s
test (windows-latest, nightly)	1m 55s
test (windows-latest, beta)	1m 55s
test (windows-latest, stable)	1m 49s
test (macos-latest, nightly)	2m 21s
test (macos-latest, beta)	1m 32s
test (macos-latest, stable)	1m 40s
test (windows-latest, nightly-x86_64-pc-windows-gnu)	2m 11s
test (windows-latest, nightly-i686-pc-windows-msvc)	1m 55s
test (windows-latest, nightly-i686-pc-windows-gnu)	2m 25s
	37m 15s

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