Bump flow-typed from 3.7.0 to 3.8.0

Bumps [flow-typed](https://github.com/flow-typed/flow-typed) from 3.7.0 to 3.8.0.
- [Release notes](https://github.com/flow-typed/flow-typed/releases)
- [Changelog](https://github.com/flow-typed/flow-typed/blob/master/CHANGELOG.md)
- [Commits](flow-typed/flow-typed@v3.7.0...v3.8.0)

---
updated-dependencies:
- dependency-name: flow-typed
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]