Upgrade the shared edispatcher dependency to v3.1.4 so expected shutdown cancellation is no longer logged again as error/code 500 by the common dispatcher. go.mod/go.sum only; transitive version changes are required by the selected module graph. Full go test -race ./... passed with a dedicated local PostgreSQL database. go vet ./... passed. Branch IN-757 is based on the current master. Publish a new library tag after merging, then consumers can adopt it.