publish patch release 6.4.1 #2976

Job	Run time
CI / Build	2m 26s
CI / Lint	2m 27s
Documentation / Build, test & deploy	8m 5s
CI / Build demo app	2m 25s
CI / Unit tests	3m 39s
CI / Integration tests (2)	3m 45s
CI / Integration tests (4)	3m 55s
CI / Integration tests (3)	4m 0s
CI / Integration tests (0)	3m 51s
CI / Integration tests (1)	4m 1s
Deploy release	3m 22s
	41m 56s

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