Update version determination #65

Job	Run time
build (Python 3.7, Django 2.2)	24s
build (Python 3.7, Django 3.2)	28s
build (Python 3.8, Django 2.2)	33s
build (Python 3.8, Django 3.2)	31s
build (Python 3.8, Django 4.0)	28s
build (Python 3.8, Django 4.1)	33s
build (Python 3.8, Django 4.2)	34s
build (Python 3.9, Django 2.2)	30s
build (Python 3.9, Django 3.2)	26s
build (Python 3.9, Django 4.0)	26s
build (Python 3.9, Django 4.1)	31s
build (Python 3.9, Django 4.2)	36s
build (Python 3.10, Django 3.2)	36s
build (Python 3.10, Django 4.0)	29s
build (Python 3.10, Django 4.1)	24s
build (Python 3.10, Django 4.2)	36s
build (Python pypy-3.10, Django 2.2)	45s
build (Python pypy-3.10, Django 3.2)	59s
build (Python pypy-3.10, Django 4.0)	1m 19s
build (Python pypy-3.10, Django 4.1)	51s
build (Python pypy-3.10, Django 4.2)	1m 6s
build (Python 3.10, Django qa)	24s
build (Python 3.10, Django main)	55s
build (Python pypy-3.10, Django main)	1m 9s
	15m 33s

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