Correctly set debian version of python packages #437

Job	Run time
sanity	18s
unittests	9s
jammy, good, verbose=true / build debs	4m 8s
focal, broken, cont-on-err / build debs	4m 2s
bookworm, good, verbose=bloom / build debs	4m 31s
focal, broken / build debs	2m 28s
jammy, good, timeout=3 / build debs	3m 16s
jammy push / deploy	8s
bookworm squash / deploy	10s
	19m 10s

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