fix(@angular-devkit/build-angular): update http-proxy-middleware to v… #935

Job	Run time
list	32s
workflow (modules-builder-tests)	1m 50s
workflow (devkit-core-tests)	1m 11s
workflow (build-cli)	1m 34s
workflow (build-unit-tests)	2m 27s
workflow (devkit-core-tests-rerun)	1m 30s
	9m 4s

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