build(deps): Bump follow-redirects from 1.15.4 to 1.15.6 in /engine/frontend #8348

Job	Run time
check-if-code-change	22s
golang-lint (container-engine-lib)	21s
golang-lint (contexts-config-store)	15s
golang-lint (grpc-file-transfer/golang)	16s
golang-lint (metrics-library/golang)	12s
golang-lint (name_generator)	8s
golang-lint (api/golang)	19s
golang-lint (core/server)	2m 55s
golang-lint (core/launcher)	20s
golang-lint (engine/server)	2m 47s
golang-lint (engine/launcher)	14s
golang-lint (internal_testsuites/golang)	18s
golang-lint (cli/cli)	40s
	9m 7s

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