[GR-61438] Avoid actions/cache in main workflow #20910

Job	Run time
/substratevm on Windows	8m 15s
/compiler style,fullbuild,test JDK21	31m 57s
/compiler build,bootstraplite JDKlatest	4m 14s
/espresso style,fullbuild JDK21	13m 37s
/substratevm style,fullbuild JDK21	11m 22s
/substratevm build,helloworld,native_unittests JDKlatest	20m 22s
/substratevm build,debuginfotest JDKlatest	23m 27s
/substratevm hellomodule JDKlatest	4m 55s
/sulong style,fullbuild,sulongBasic JDK21	20m 25s
/truffle JDK21	37m 25s
/vm build,sulong JDKlatest	26m 36s
/vm build JDKlatest	15m 59s
	3h 38m 34s

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