Only enable Java dependency minimisation when caching is enabled #5088

Job	Run time
Config export (macos-latest, nightly-latest)	1m 12s
Config export (ubuntu-latest, linked)	1m 5s
Config export (windows-latest, linked)	2m 0s
Config export (ubuntu-latest, nightly-latest)	1m 5s
Config export (windows-latest, nightly-latest)	2m 31s
Config export (macos-latest, linked)	1m 21s
	9m 14s

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