Fix broken Python 3.9 tests #959

Job	Run time
conda-linux-python3.8-minimum	2m 20s
linux-python3.8-minimum	1m 59s
conda-linux-python3.12-upgraded	3m 52s
linux-gallery-python3.8-minimum	55s
linux-python3.12	2m 19s
linux-gallery-python3.12-upgraded	1m 0s
linux-python3.12-upgraded	3m 50s
windows-gallery-python3.8-minimum	1m 35s
windows-python3.8-minimum	3m 25s
windows-gallery-python3.12-upgraded	1m 45s
windows-python3.12-upgraded	3m 24s
macos-python3.8-minimum	3m 52s
macos-python3.12-upgraded	3m 52s
Deploy pre-release from dev	1s
	34m 9s

Provide feedback