Java CI with Gradle

Bump com.gradle.develocity from 3.18.2 to 3.19 in /examples #4130

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Run time

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Job	Run time
Build example projects (17)	2m 10s
Build plugin (11)	4m 33s
Build example projects (21)	2m 13s
Build plugin (17)	4m 18s
Build plugin (21)	4m 21s
	17m 35s