[FSSDK-12246] prepare release v6.3.1 (#1134) #1533

Job	Run time
typescript_test	1m 29s
lint	57s
browser_tests (firefox)	10m 2s
browser_tests (safari)	3m 53s
unit_tests (18)	1m 41s
integration_tests / test	9s
browser_tests (chrome)	7m 33s
browser_tests (edge)	6m 53s
unit_tests (22)	1m 29s
fullstack_production_suite / test	9s
unit_tests (24)	1m 24s
unit_tests (20)	1m 37s
lint_markdown_files / lint	1m 14s
Coveralls coverage	5s
	38m 35s

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