chore(deps): update dependency pwa-asset-generator to v6.4.0 #1213

Job	Run time
Setup	2m 47s
Teardown accounts API	1m 49s
Teardown accounts warm up	1m 43s
Teardown accounts queue	2m 3s
Teardown accounts reports	2m 23s
Teardown accounts notifications	1m 36s
Teardown accounts data	2m 7s
Teardown accounts storage	2m 20s
Teardown anti virus	3m 23s
	20m 11s

Provide feedback