Test

Bump actions/upload-artifact from 3 to 4 #568

Job	Run time
Python 3.8 / dj32	55s
Python 3.8 / dj41	42s
Python 3.8 / dj42	45s
Python 3.9 / dj32	37s
Python 3.9 / dj41	34s
Python 3.9 / dj42	35s
Python 3.10 / dj32	33s
Python 3.10 / dj41	37s
Python 3.10 / dj42	39s
Python 3.10 / dj50	39s
Python 3.11 / dj32	41s
Python 3.11 / dj41	35s
Python 3.11 / dj42	37s
Python 3.11 / dj50	39s
Python 3.12 / dj32	44s
Python 3.12 / dj41	1m 0s
Python 3.12 / dj42	40s
Python 3.12 / dj50	50s
Python 3.10 / djmain	44s
Python 3.11 / djmain	50s
Python 3.12 / djmain	1m 1s
Indicate completion to coveralls.io	12s
	15m 9s

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