 WARN: deprecated sourcemap-codec@1.4.8

## Describe the bug

npm WARN deprecated sourcemap-codec@1.4.8: Please use @jridgewell/sourcemap-codec instead

![スクリーンショット 2023-11-12 172702](https://github.com/google/aside/assets/10007402/b9879848-04c2-4d90-89b9-00aeaf1d953a)


## References

https://github.com/sveltejs/svelte/pull/8157

