backstage/.changeset/gold-laws-attend.md

@backstage/plugin-techdocs-backend, @backstage/plugin-techdocs-node

@backstage/plugin-techdocs-backend	@backstage/plugin-techdocs-node
minor	minor

Add projectId config option to GCP Cloud Storage techdocs publisher. This will allow users to override the project ID, instead of implicitly using the same one as found in a credentials bundle.