chore: preserve workspace yaml quote style (#1672)

## Summary

- Prefer single quotes when `sync-remote` rewrites
`pnpm-workspace.yaml`.
- Keep generated workspace YAML aligned with the repo formatter.

Author: lyzno1

packages/tools/src/sync-remote-deps.ts

@@ -721,6 +721,7 @@ export async function syncRemote() {
   // Write the merged workspace back
   const yamlContent = stringifyYaml(mergedWorkspace, {
     lineWidth: -1,
+    singleQuote: true,
   });
 
   writeFileSync(mainWorkspacePath, yamlContent, 'utf-8');