Bump blockly from 10.4.3 to 11.2.0 in /csunplugged #1636

Job	Run time
Tests - Django system check	2m 39s
Tests - Content	4m 36s
Tests - General	3m 20s
Tests - Documentation	1m 15s
Tests - Resources	2m 48s
Tests - Style	2m 52s
Tests - Management	3m 36s
Create at a distance files	0s
Create resources	0s
Create resource thumbnails	0s
Create static files	0s
Create and publish Docker image	0s
	21m 6s

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