Update bokeh requirement from <2.3,>=1.4.0 to >=1.4.0,<3.1

Updates the requirements on [bokeh](https://github.com/bokeh/bokeh) to permit the latest version.
- [Release notes](https://github.com/bokeh/bokeh/releases)
- [Changelog](https://github.com/bokeh/bokeh/blob/3.0.3/docs/CHANGELOG)
- [Commits](bokeh/bokeh@1.4.0...3.0.3)

---
updated-dependencies:
- dependency-name: bokeh
  dependency-type: direct:development
...

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

Author: dependabot[bot]

setup.py

@@ -105,7 +105,7 @@
 
         'matplotlib>=3,<3.4',
         #'cairocffi>=0.5.4',
-        'bokeh>=1.4.0,<2.3',
+        'bokeh>=1.4.0,<3.1',
         'vincent>=0.4.4,<0.5',
     ],