ci: fix cache key issue #533

# to view logs

Job	Run time
windows / setup	1m 5s
macos / setup (macos-13)	1m 21s
linux / setup (ubuntu-20.04)	44s
macos / setup (macos-latest)	31s
linux / setup (ubuntu-latest)	40s
linux / test (ubuntu-20.04, tcc)	6s
linux / test-sanitzed (gcc, address,leak,undefined,shift,shift-exponent,shift-base,integer-divide-by-zero...	27s
linux / test (ubuntu-20.04, gcc)	13s
linux / test-sanitzed (gcc, thread)	17s
linux / test (ubuntu-20.04, gcc, -W -cstrict)	13s
linux / test-sanitzed (clang, address,leak,undefined)	16s
linux / test (ubuntu-20.04, clang)	15s
linux / test-sanitzed (clang, thread)	14s
linux / test (ubuntu-20.04, clang, -W -cstrict)	16s
linux / test (ubuntu-latest, tcc)	8s
linux / lint / fmt	7s
linux / lint / vet	3s
linux / test (ubuntu-latest, gcc)	14s
linux / test (ubuntu-latest, gcc, -W -cstrict)	18s
linux / lint / check-md	8s
linux / test (ubuntu-latest, clang)	10s
linux / test (ubuntu-latest, clang, -W -cstrict)	11s
windows / test	1m 2s
windows / test (-W)	1m 0s
macos / test (macos-13, tcc)	29s
macos / test (macos-13, clang)	19s
macos / test (macos-13, clang, -W -cstrict)	28s
macos / test (macos-latest, tcc)	25s
macos / test (macos-latest, clang)	15s
macos / test (macos-latest, clang, -W -cstrict)	13s
	12m 8s

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