GitHub actions: update "cache" version for set-state deprecation #704

Job	Run time
build-postlib-release	16m 54s
build-drivers-release	8m 29s
build-all-debug-single	4m 28s
build-all-debug	6m 44s
build-test-uadriver-debug	2m 51s
rtest-modules-debug	8m 36s
rtest-module-drivers	4m 11s
build-interfaces-release	5m 56s
build-fastfarm-release	16m 11s
build-openfast-release	4m 9s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1m 57s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	4m 7s
rtest-OF	8m 12s
rtest-OF-5MW_Land_BD_DLL_WTurb	3m 16s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	6m 54s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	1m 17s
rtest-OF-linearization	2m 48s
rtest-interfaces	7m 42s
rtest-FF	3m 11s
	1h 57m 53s

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