Continuous integration

Upgrade to v4 of `upload-artifact` GitHub action #1077

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Run time

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Job	Run time
JDK 11 on macos-latest	1m 32s
Upload event file	2s
JDK 11 on macos-14	1m 33s
JDK 11 on ubuntu-latest	1m 24s
JDK 11 on windows-latest	5m 27s
JDK 17 on ubuntu-latest	1m 24s
JDK 21 on ubuntu-latest	1m 9s
Publish snapshot	0s
Generate latest docs	0s
	12m 31s