docs: release notes for the v19.2.26 release #3567

Job	Run time
list	25s
workflow (build-cli)	1m 34s
workflow (devkit-core-tests)	1m 18s
workflow (build-unit-tests)	2m 11s
workflow (modules-builder-tests)	1m 56s
workflow (devkit-core-tests-rerun)	1m 26s
	8m 50s

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