Bokeh deprecation warnings

[OriolAbril]

I saw

BokehDeprecationWarning: Dash() was deprecated in Bokeh 2.3.0 and will be removed, use Scatter(marker='dash') instead.
BokehDeprecationWarning: Cross() was deprecated in Bokeh 2.3.0 and will be removed, use Scatter(marker='cross') instead.

in the docs build. We should search for all occurrences of these in the codebase and update them.

[migunasekera]

Hi @OriolAbril, I'd be interested in contributing, could I be assigned to this?

[OriolAbril]

Done, thanks! Let us know if you have any doubts

[Random-coder123]

Hi, I would like to contribute to this, could I please be assigned? Thank you

[OriolAbril]

Hi @Random-coder123, the issue is already assigned to @migunasekera and per our contributing guidelines would only be available if in 10 days there were to be no updates at all or @migunasekera commented here to unassign from the issue.

There are many other tasks to work on though, would #1188 for example be interesting to you? Is there a particular topic on which you'd like to work?

[vikramnagashoka]

Hi @OriolAbril ,
I would like to pick up this task. Can I please be assigned to this ?
Thanks

[OriolAbril]

As it has been already two weeks since the last comment there has been no activity I have assigned it to you. As always, let us know if you have any doubts.

[vikramnagashoka]

Thanks for assigning it to me. I have created a pull request for the same here.
https://github.com/arviz-devs/arviz/pull/1683