chore: fix GoReleaser deprecations, bump action to v7

- archives.builds → archives.ids (deprecated v2.8)
- archives.format → archives.formats (deprecated v2.6)
- goreleaser-action@v6 → @v7

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: intel352

.github/workflows/release-samples.yml

@@ -25,7 +25,7 @@ jobs:
         uses: sigstore/cosign-installer@v3
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v6
+        uses: goreleaser/goreleaser-action@v7
         with:
           version: '~> v2'
           args: release --clean

.goreleaser.yml

@@ -18,10 +18,10 @@ builds:
 
 archives:
   - id: sample-orders
-    builds:
+    ids:
       - sample-orders
     name_template: "sample-orders_{{ .Os }}_{{ .Arch }}"
-    format: tar.gz
+    formats: [tar.gz]
 
 checksum:
   name_template: checksums.txt