Bump lxml from 4.9.4 to 5.1.0 #2216

Job	Run time
Tests - Content	35s
Tests - Content	35s
Tests - Django system check	41s
Tests - Django system check	2m 28s
Tests - General	42s
Tests - General	42s
Tests - Documentation	26s
Tests - Documentation	26s
Tests - Management	34s
Tests - Management	34s
Tests - Style	38s
Tests - Style	38s
Create static files	0s
Create static files	0s
Create interactive thumbnails	0s
Create interactive thumbnails	0s
Create and publish Docker image	0s
Create and publish Docker image	0s
	8m 59s

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