Bump actions/download-artifact from 3 to 4 #335

Job	Run time
Execute docs/tutorials/lc-gp-transit.ipynb	9m 12s
Execute docs/tutorials/lc-multi.ipynb	15m 26s
Execute docs/tutorials/joint.ipynb	18m 41s
Execute docs/tutorials/tess.ipynb	17m 39s
Execute docs/tutorials/eb.ipynb	15m 53s
Execute docs/tutorials/quick-tess.ipynb	7m 33s
Execute docs/tutorials/stellar-variability.ipynb	7m 14s
Execute docs/tutorials/ttv.ipynb	7m 42s
Execute docs/tutorials/rv-multi.ipynb	6m 0s
Execute docs/tutorials/astrometric.ipynb	7m 5s
Execute docs/tutorials/transit.ipynb	6m 4s
Execute docs/tutorials/rv.ipynb	5m 28s
Build the docs page	59s
	2h 4m 56s

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