1.41.1

(chore): Patch Go SDK + Go model generator container CVEs flagged in the AWS ECR / grype scan. Bump the Go base image to golang:1.26.3-alpine3.23, refresh apk upgrade, and patch npm’s bundled picomatch@4.0.3 -> 4.0.4 and brace-expansion@5.0.4 -> 5.0.5 via tarball replacement so the published image no longer ships the vulnerable bundled JS dependencies that grype flags. Also drop the internal/testdata/** test fixtures and clear the /go/pkg/mod + /root/.cache/go-build build caches from the runtime image so grype no longer scans them as a source of stale yaml.v3 and golang.org/x/net pseudo-versions that are not actually linked into /fern-go-sdk.