gitlab: prefix outputs with action's name #1342

Job	Run time
golangci-lint	11s
migrate-test	12s
migrate-down	14s
monitoring	31s
schema-apply (lint-review)	8s
schema-plan	9s
schema-plan-approve	0s
schema-push	9s
schema-apply (on-the-fly, true)	7s
schema-test	15s
shim	11s
schema-apply (remote-repo, atlas://atlas-action/plans/20240910183610, atlas://atlas-action?tag=e2e)	9s
shim-e2e	9s
schema-apply (local-plan, file://20240910173744.plan.hcl)	14s
schema-apply (multiple-envs, file://20240910173744.plan.hcl)	17s
unit-tests	1m 8s
schema-apply (legacy, v0.27.0, true)	16s
	4m 20s

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