[FSSDK-12109] chore: prepare for release 4.3.0 #629

Job	Run time
lint_markdown_files	1m 19s
fullstack_production_suite / test	4s
test (8, JSON_CONFIG_PARSER)	5m 30s
test (9, JACKSON_CONFIG_PARSER)	5m 46s
test (8, JSON_SIMPLE_CONFIG_PARSER)	4m 57s
integration_tests / test	6s
test (9, JSON_SIMPLE_CONFIG_PARSER)	8m 23s
test (8, JACKSON_CONFIG_PARSER)	6m 37s
test (9, JSON_CONFIG_PARSER)	6m 1s
test (8, GSON_CONFIG_PARSER)	5m 31s
test (9, GSON_CONFIG_PARSER)	7m 57s
publish	0s
snapshot	0s
	52m 11s

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