ci: remove single value os matrix field from E2E jobs #2670

Job	Run time
list	26s
workflow (build-cli)	1m 45s
workflow (build-unit-tests)	2m 31s
workflow (modules-builder-tests)	1m 51s
workflow (devkit-core-tests-rerun)	1m 32s
workflow (devkit-core-tests)	1m 8s
	9m 13s

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