Build and publish only linux/amd64 and windows/amd64

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -59,4 +59,4 @@ jobs:
             *-*) ;;                       # pre-releases (v1.0.0-rc1) don't move :latest
             *) tags="$tags -t $image:latest" ;;
           esac
-          docker buildx build --platform linux/amd64,linux/arm64 $tags --push .
+          docker buildx build --platform linux/amd64 $tags --push .