Bump prosemirror-commands from 1.6.1 to 1.6.2

Bumps [prosemirror-commands](https://github.com/prosemirror/prosemirror-commands) from 1.6.1 to 1.6.2.
- [Changelog](https://github.com/ProseMirror/prosemirror-commands/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prosemirror/prosemirror-commands/compare/1.6.1...1.6.2

)

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

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