Drop support for Python 3.9 #5865

Job	Run time
build_windows (3.10)	43m 50s
build_windows (3.11)	43m 27s
build_windows (3.12)	41m 40s
build_windows (3.14)	45m 9s
build_linux (3.11)	34m 15s
build_linux (3.10)	34m 44s
build_windows (3.13)	47m 1s
build_linux (3.14)	32m 1s
build_linux (3.13)	34m 26s
build_linux (3.12)	34m 17s
test_examples_linux (3.11, false, ubuntu-22.04)	8m 36s
array-api-conformity (3.10, false, ubuntu-22.04)	3m 2s
test_linux (3.14, false, ubuntu-22.04)	12m 46s
test_linux (3.10, false, ubuntu-22.04)	10m 50s
test_linux (3.12, false, ubuntu-22.04)	11m 8s
test_linux (3.13, false, ubuntu-22.04)	11m 11s
test_linux (3.11, false, ubuntu-22.04)	10m 50s
test_windows (3.10, false, windows-latest)	14m 29s
test_windows (3.11, false, windows-latest)	15m 33s
test_windows (3.14, false, windows-latest)	14m 21s
test_windows (3.12, false, windows-latest)	14m 4s
test_windows (3.13, false, windows-latest)	14m 7s
upload_linux	0s
upload_windows	0s
Clean up anaconda packages	0s
	8h 51m 47s

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