Bump serialize-javascript and ember-auto-import in /scribblings

Bumps [serialize-javascript](https://github.com/yahoo/serialize-javascript) to 6.0.2 and updates ancestor dependency [ember-auto-import](https://github.com/embroider-build/ember-auto-import/tree/HEAD/packages/ember-auto-import). These dependencies need to be updated together.


Updates `serialize-javascript` from 1.9.1 to 6.0.2
- [Release notes](https://github.com/yahoo/serialize-javascript/releases)
- [Commits](yahoo/serialize-javascript@v1.9.1...v6.0.2)

Updates `ember-auto-import` from 1.6.0 to 2.10.0
- [Release notes](https://github.com/embroider-build/ember-auto-import/releases)
- [Changelog](https://github.com/embroider-build/ember-auto-import/blob/main/packages/ember-auto-import/CHANGELOG.md)
- [Commits](https://github.com/embroider-build/ember-auto-import/commits/HEAD/packages/ember-auto-import)

---
updated-dependencies:
- dependency-name: serialize-javascript
  dependency-type: indirect
- dependency-name: ember-auto-import
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>