Drop support for Django < 4.2 (#381) #138

Job	Run time
tests_node	14s
Test on Python 3.8 and Django 4.2 on postgres	57s
Test on Python 3.9 and Django 4.2 on postgres	55s
Test on Python 3.10 and Django 4.2 on postgres	1m 8s
Test on Python 3.11 and Django 4.2 on postgres	1m 2s
Test on Python 3.12 and Django 4.2 on postgres	1m 16s
Test on Python 3.10 and Django 5.0 on postgres	1m 17s
Test on Python 3.11 and Django 5.0 on postgres	1m 31s
Test on Python 3.12 and Django 5.0 on postgres	59s
Test on Python 3.10 and Django 5.1 on postgres	58s
Test on Python 3.11 and Django 5.1 on postgres	1m 7s
Test on Python 3.12 and Django 5.1 on postgres	58s
Test on Python 3.8 and Django 4.2 on sqlite	59s
	13m 21s

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