backstage/.changeset/chilly-games-trade.md

@backstage/backend-defaults

@backstage/backend-defaults
minor

Added a new backend.health.headers configuration that can be used to set additional headers to include in health check responses.

BREAKING CONSUMERS: As part of this change the createHealthRouter function exported from @backstage/backend-defaults/rootHttpRouter now requires the root config service to be passed through the config option.