Bump jquery-ui from 1.12.1 to 1.13.2 in /ipywidgets_bokeh (#56)

Bumps [jquery-ui](https://github.com/jquery/jquery-ui) from 1.12.1 to 1.13.2.
- [Release notes](https://github.com/jquery/jquery-ui/releases)
- [Commits](jquery/jquery-ui@1.12.1...1.13.2)

---
updated-dependencies:
- dependency-name: jquery-ui
  dependency-type: indirect
...

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