fix(@schematics/angular): add trusted-proxy-headers migration #3489

Job	Run time
list	24s
workflow (build-unit-tests)	2m 9s
workflow (devkit-core-tests-rerun)	1m 33s
workflow (devkit-core-tests)	1m 24s
workflow (modules-builder-tests)	1m 51s
workflow (build-cli)	2m 2s
	9m 23s

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