fixup! Replaced Firefox with Chromium for Selenium tests #151

Job	Run time
Run tox environment quality	44s
Visual tests	26s
Run tox environment dist-validation	22s
build (Python 3.10, Django 4.2)	1m 4s
build (Python 3.10, Django 5.0)	1m 7s
build (Python 3.10, Django 5.1)	1m 2s
build (Python 3.10, Django main)	1m 43s
build (Python 3.11, Django 4.2)	1m 3s
build (Python 3.11, Django 5.0)	1m 1s
build (Python 3.11, Django 5.1)	1m 4s
build (Python 3.11, Django main)	1m 35s
build (Python 3.12, Django 4.2)	1m 24s
build (Python 3.12, Django 5.0)	1m 24s
build (Python 3.12, Django 5.1)	1m 15s
build (Python 3.12, Django main)	1m 36s
build (Python 3.8, Django 4.2)	1m 2s
build (Python 3.9, Django 4.2)	1m 3s
	18m 55s

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