Bump joelbutcher/socialstream from 6.1.7 to 6.1.8

Bumps [joelbutcher/socialstream](https://github.com/joelbutcher/socialstream) from 6.1.7 to 6.1.8.
- [Release notes](https://github.com/joelbutcher/socialstream/releases)
- [Changelog](https://github.com/joelbutcher/socialstream/blob/6.x/CHANGELOG.md)
- [Commits](joelbutcher/socialstream@v6.1.7...v6.1.8)

---
updated-dependencies:
- dependency-name: joelbutcher/socialstream
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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