minor changes to compare refdata pipeline

[epassaro]

Description

• Move bokeh installation step

Motivation and context

How has this been tested?

• Testing pipeline.

Examples

Type of change

• Bug fix.
• New feature.
• Breaking change.
• None of the above.

Checklist

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • (optional) I have built the documentation on my fork following the instructions.
• I have assigned and requested two reviewers for this pull request.

[codecov]

Codecov Report

Merging #1578 (835f0e7) into master (8e5ffe1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1578   +/-   ##
=======================================
  Coverage   67.19%   67.19%           
=======================================
  Files          73       73           
  Lines        6146     6146           
=======================================
  Hits         4130     4130           
  Misses       2016     2016           

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[Molkree]

@epassaro, oh, I think this check is not needed at all. pickle5 is only available on < 3.8 through conda, the whole tardis environment now resolves to Python 3.7 after #1566 because of this (macOS AND Linux).

[epassaro]

The data is already pickled with 3.8, so yes, we need this

[Molkree]

I think I'm missing something, can you point at the workflow with Python 3.8, please?