build: update schematics dependencies to ~5.12.0 #2043

Job	Run time
list	23s
workflow (devkit-core-tests)	1m 12s
workflow (devkit-core-tests-rerun)	1m 26s
workflow (build-unit-tests)	2m 27s
workflow (modules-builder-tests)	1m 46s
workflow (build-cli)	1m 45s
	8m 59s

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