Increase Pillow dependency range to include 10.x #85

Job	Run time
test-postgres (3.7, Django>=3.2,<3.3, false)	18m 18s
test-postgres (3.11, Django>=4.2,<4.3, postgres:12, notz, false)	25m 45s
test-postgres (3.10, Django>=4.1,<4.2, false, emailuser)	16m 23s
test-postgres (3.10, git+https://github.com/django/django.git@stable/4.2.x#egg=Django, true, post...	15m 48s
test-postgres (3.10, git+https://github.com/django/django.git@main#egg=Django, true, postgres:12,...	21m 13s
test-postgres-elasticsearch7 (3.8, Django>=4.1,<4.2, false)	12m 31s
test-postgres-elasticsearch6 (3.7, Django>=3.2,<3.3)	10m 6s
test-mysql (3.8, Django>=3.2,<3.3, false)	23m 50s
test-mysql (3.10, Django>=4.2,<4.3, false)	30m 14s
test-sqlite (3.9, Django>=4.1,<4.2)	13m 12s
test-sqlite-elasticsearch5 (3.7, Django>=3.2,<3.3)	10m 15s
test-sqlite-elasticsearch7 (3.9, Django>=4.2,<4.3, emailuser)	7m 22s
coverage	40s
	3h 25m 37s

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