build(deps): bump actions/cache from 4 to 5 (#286) #1254

Job	Run time
build (msrv) / rust	23s
build (nightly) / rust	26s
build (stable) / rust	26s
style (msrv) / rust	28s
build no_std (msrv) / rust	21s
build no_std (stable) [w/o builder] / rust	19s
build no_std (stable) [Windows] / rust	1m 12s
build no_std (stable) / rust	19s
style (stable) / rust	32s
style (nightly) / rust	29s
tests with miri (nightly) / rust	1m 33s
build no_std (nightly) / rust	27s
	6m 55s

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