Drop python 310 #1025

Job	Run time
bugwarrior-test (3.12)	40s
bugwarrior-test (3.13)	41s
bugwarrior-test (3.11)	32s
bugwarrior-development-pip-test	53s
bugwarrior-multiarch-test (ppc64le)	5m 20s
bugwarrior-test (3.14)	36s
	8m 42s

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