Bump smart-open from 7.0.1 to 7.0.3

Bumps [smart-open](https://github.com/piskvorky/smart_open) from 7.0.1 to 7.0.3.
- [Release notes](https://github.com/piskvorky/smart_open/releases)
- [Changelog](https://github.com/piskvorky/smart_open/blob/develop/CHANGELOG.md)
- [Commits](piskvorky/smart_open@v7.0.1...v7.0.3)

---
updated-dependencies:
- dependency-name: smart-open
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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