Mark suite files for 23.1.6 release #91

Job	Run time
/compiler style,fullbuild,test JDK21	28m 10s
/compiler build,bootstraplite JDK21	4m 14s
/espresso style,fullbuild JDK21	12m 1s
/substratevm style,fullbuild JDK21	10m 1s
/substratevm build,helloworld,native_unittests JDK21	23m 45s
/substratevm build,debuginfotest JDK21	11m 7s
/substratevm hellomodule JDK21	4m 22s
/sulong style,fullbuild,sulongBasic JDK21	19m 7s
/truffle JDK21	20m 36s
/vm build,sulong JDK21	26m 45s
/vm build JDK21	15m 52s
	2h 56m 0s

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