Run all tox jobs using Python3

CI(dependabot): Bump mikepenz/action-junit-report from 4 to 5 #556

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Run time

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Job	Run time
build (3.10, latest_versions)	16m 54s
build (3.11, latest_versions)	18m 51s
build (3.12, latest_versions)	22m 15s
build (3.10, min_versions)	16m 23s
	1h 14m 23s