Support Django 5.2 and Python 3.13, drop Python 3.8 (#388) #152

Job	Run time
tests_node	12s
Test on Python 3.9 and Django 4.2 on postgres	1m 17s
Test on Python 3.10 and Django 4.2 on postgres	1m 3s
Test on Python 3.11 and Django 4.2 on postgres	1m 18s
Test on Python 3.12 and Django 4.2 on postgres	1m 13s
Test on Python 3.10 and Django 5.0 on postgres	1m 5s
Test on Python 3.11 and Django 5.0 on postgres	1m 3s
Test on Python 3.12 and Django 5.0 on postgres	3m 16s
Test on Python 3.10 and Django 5.1 on postgres	2m 47s
Test on Python 3.11 and Django 5.1 on postgres	54s
Test on Python 3.12 and Django 5.1 on postgres	1m 4s
Test on Python 3.13 and Django 5.1 on postgres	1m 1s
Test on Python 3.10 and Django 5.2 on postgres	1m 6s
Test on Python 3.11 and Django 5.2 on postgres	1m 15s
Test on Python 3.12 and Django 5.2 on postgres	1m 14s
Test on Python 3.13 and Django 5.2 on postgres	1m 17s
Test on Python 3.9 and Django 4.2 on sqlite	1m 20s
	22m 25s

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