fix(tracing): treat resource detector errors as non-fatal

processOwnerDetector calls os/user.Current(), which fails in non-cgo
builds when the running UID has no /etc/passwd entry and $USER is unset
(common on hardened/distroless containers). It returns a plain error,
not ErrPartialResource, so the previous gate let the error escape and
SetupSDK aborted process startup.

Resource detection is documented as best-effort; downgrade any detector
error to a warning and fall back to an empty resource if the SDK returns
nil. The signature is preserved.

scripts/run-goreleaser

@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-go install github.com/goreleaser/goreleaser/v2@v2.14.1
+go install github.com/goreleaser/goreleaser/v2@v2.15.4
 
 if [ ! -z "${harbor_username:-}" ]; then
   DOCKER_FILE=~/.docker/config.json