Bump prosemirror-commands from 1.6.2 to 1.7.0

Bumps [prosemirror-commands](https://github.com/prosemirror/prosemirror-commands) from 1.6.2 to 1.7.0.
- [Changelog](https://github.com/ProseMirror/prosemirror-commands/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prosemirror/prosemirror-commands/compare/1.6.2...1.7.0

)

---
updated-dependencies:
- dependency-name: prosemirror-commands
  dependency-version: 1.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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