chore(release): archives.formats (deprecation) + snapshot verificado

goreleaser check: config válida (queda sólo la deprecation intencional de
dockers/docker_manifests → dockers_v2, futura). goreleaser release --snapshot
buildea binarios linux amd64/arm64 + archives + SBOMs (syft) + imágenes docker
ghcr.io/spin-stack/devcontainer-cli:*-{amd64,arm64}; smoke 'docker run <img>
--version' OK. RW-015/016 verificados localmente.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: aledbf

.goreleaser.yml

@@ -26,7 +26,7 @@ builds:
 
 archives:
   - id: default
-    format: tar.gz
+    formats: [tar.gz]
     name_template: "devcontainer_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
 
 checksum: