fix error when activating windows environment in public CI #6049

Job	Run time
build_windows (3.13)	44m 55s
build_windows (3.14)	45m 57s
build_linux (3.14)	31m 28s
build_linux (3.12)	28m 36s
build_linux (3.11)	31m 30s
build_windows (3.10)	52m 31s
build_windows (3.11)	45m 39s
build_windows (3.12)	41m 12s
build_linux (3.10)	29m 38s
build_linux (3.13)	29m 12s
test_examples_linux (3.11, false, ubuntu-22.04)	9m 4s
array-api-conformity (3.10, false, ubuntu-22.04)	5m 13s
test_linux (3.10, false, ubuntu-22.04)	10m 12s
test_linux (3.12, false, ubuntu-22.04)	10m 26s
test_linux (3.13, false, ubuntu-22.04)	10m 20s
test_linux (3.14, false, ubuntu-22.04)	10m 19s
test_linux (3.11, false, ubuntu-22.04)	9m 49s
upload_linux	0s
test_windows (3.11, false, windows-latest)	14m 42s
test_windows (3.10, false, windows-latest)	15m 6s
test_windows (3.14, false, windows-latest)	14m 26s
test_windows (3.13, false, windows-latest)	14m 25s
test_windows (3.12, false, windows-latest)	14m 58s
upload_windows	-1s
Clean up anaconda packages	0s
	8h 39m 37s

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