Update BE tests #172

Job	Run time
test-sqlite (3.11, Django>=5.0,<5.1, 1)	11m 42s
test-mysql (3.10, Django>=4.2,<4.3, false)	19m 10s
test-sqlite (3.12, Django>=5.1,<5.2, emailuser, --parallel)	7m 38s
test-postgres-elasticsearch7 (3.9, Django>=4.2,<4.3, false)	6m 58s
test-mysql (3.11, Django>=4.2,<4.3, false, mariadb:10.5)	16m 54s
test-postgres (3.9, Django>=4.2,<4.3, psycopg2>=2.6, false, --parallel)	7m 54s
test-mysql (3.12, Django>=5.1,<5.2, false, mariadb:11.4, emailuser)	21m 25s
test-postgres (3.12, Django>=5.0,<5.1, psycopg>=3.1.8, postgres:15, notz, false, --parallel)	11m 42s
test-mysql (3.12, Django>=5.1,<5.2, false, --parallel, mysql:8.4, emailuser)	13m 51s
test-sqlite-elasticsearch8 (3.12, Django>=5.1,<5.2, emailuser)	7m 7s
test-sqlite-opensearch2 (3.10, Django>=5.0,<5.1, false)	6m 17s
test-postgres (3.11, git+https://github.com/django/django.git@stable/5.1.x#egg=Django, psycopg>=3...	16m 43s
test-postgres (3.12, git+https://github.com/django/django.git@main#egg=Django, psycopg>=3.1.8, tr...	11m 0s
coverage	50s
	2h 39m 11s

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