ci: remove single value os matrix field from E2E jobs #2669

Job	Run time
list	21s
workflow (modules-builder-tests)	1m 38s
workflow (devkit-core-tests-rerun)	1m 23s
workflow (devkit-core-tests)	1m 30s
workflow (build-unit-tests)	2m 30s
workflow (build-cli)	1m 39s
	9m 1s

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