build

Bump version: 3.9.29 → 3.9.30-alpha.0 #1823

Job	Run time
py39 (ubuntu)	10m 15s
py311 (ubuntu)	10m 5s
docs	1m 1s
py311 (macos)	7m 36s
py38 (ubuntu)	10m 10s
py310 (ubuntu)	10m 59s
py311 (windows)	13m 7s
py39 (windows)	10m 53s
check	45s
py310 (windows)	12m 16s
Deploy docs to GitHub Pages	0s
Upload coverage to Coveralls	0s
	1h 27m 7s

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