Test

Update `jupyterlite-core` dependency (#150) #461

Job	Run time
build	2m 33s
Integration tests (default)	1m 53s
test (ubuntu, 3.8)	1m 55s
Integration tests (crossoriginisolated)	1m 54s
test (ubuntu, 3.11)	1m 33s
test (windows, 3.8)	5m 47s
test (windows, 3.11)	4m 32s
test (macos, 3.8)	2m 1s
test (macos, 3.11)	1m 9s
	23m 17s

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