build: switch to 7.0.0.Alpha3 (#386) #927

Job	Run time
maven-enforcer (17, temurin, false)	49s
build (17, temurin, false)	39s
build (24, oracle, false)	35s
build (21, liberica, false)	35s
build (25-ea, zulu, true)	36s
	3m 14s

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