Support Django 5.0 and Python 3.12, drop Python 3.8 #115

Job	Run time
tests_node	17s
Test on Python 3.8 and Django 3.2 on postgres	1m 19s
Test on Python 3.9 and Django 3.2 on postgres	1m 22s
Test on Python 3.10 and Django 3.2 on postgres	1m 3s
Test on Python 3.8 and Django 4.0 on postgres	1m 12s
Test on Python 3.9 and Django 4.0 on postgres	1m 5s
Test on Python 3.10 and Django 4.0 on postgres	1m 3s
Test on Python 3.8 and Django 4.1 on postgres	1m 3s
Test on Python 3.9 and Django 4.1 on postgres	1m 3s
Test on Python 3.10 and Django 4.1 on postgres	1m 12s
Test on Python 3.11 and Django 4.1 on postgres	1m 4s
Test on Python 3.8 and Django 4.2 on postgres	1m 3s
Test on Python 3.9 and Django 4.2 on postgres	1m 13s
Test on Python 3.10 and Django 4.2 on postgres	1m 2s
Test on Python 3.11 and Django 4.2 on postgres	1m 5s
Test on Python 3.12 and Django 4.2 on postgres	1m 28s
Test on Python 3.10 and Django 5.0 on postgres	1m 11s
Test on Python 3.11 and Django 5.0 on postgres	1m 14s
Test on Python 3.12 and Django 5.0 on postgres	1m 8s
Test on Python 3.8 and Django 3.2 on sqlite	1m 34s
	22m 41s

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