Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows #20

Job	Run time
Extra_tests (py38-tf2.13, ubuntu-latest, 18, 1.16.3, 1.16.1, False)	5m 30s
Test_max_py_with_latest_tf	5m 2s
Extra_tests (py38-tf2.13, ubuntu-latest, 15, 1.16.3, 1.16.1, False)	8m 4s
Test_min_py_with_min_tf	6m 11s
Extra_tests (py38-tf2.13, windows-2022, 18, 1.16.3, 1.16.1, False)	5m 3s
Extra_tests (py38-tf2.13, windows-2022, 15, 1.16.3, 1.16.1, False)	7m 29s
Extra_tests (py39-tf2.15, ubuntu-latest, 18, 1.16.3, 1.16.1, False)	5m 30s
Extra_tests (py39-tf2.15, ubuntu-latest, 15, 1.16.3, 1.16.1, False)	7m 24s
Extra_tests (py39-tf2.15, windows-2022, 18, 1.16.3, 1.16.1, False)	5m 14s
Extra_tests (py39-tf2.15, windows-2022, 15, 1.16.3, 1.16.1, False)	7m 19s
Extra_tests (py37-tf1.15, ubuntu-latest, 15, 1.14.1, 1.14.1, 1.15.5, 3.7)	1m 3s
Publish Tests Results to Github	13s
	1h 4m 2s

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