Bump css-inline from 0.10.3 to 0.10.4

Bumps [css-inline](https://github.com/Stranger6667/css-inline) from 0.10.3 to 0.10.4.
- [Release notes](https://github.com/Stranger6667/css-inline/releases)
- [Changelog](https://github.com/Stranger6667/css-inline/blob/master/CHANGELOG.md)
- [Commits](Stranger6667/css-inline@ruby-v0.10.3...ruby-v0.10.4)

---
updated-dependencies:
- dependency-name: css-inline
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>