bump bqplot version to fix slice indicator drag event

[kecnry]

Description

This pull request fixes the issue in #1013 (comment) by bumping the bqplot version to include glue-viz/bqplot-image-gl#86.

Checklist for package maintainer(s)

This checklist is meant to remind the package maintainer(s) who will review this pull request of some common things to look for. This list is not exhaustive.

• Are two approvals required? Branch protection rule does not check for the second approval. If a second approval is not necessary, please apply the trivial label.
• Do the proposed changes actually accomplish desired goals? Also manually run the affected example notebooks, if necessary.
• Do the proposed changes follow the STScI Style Guides?
• Are tests added/updated as required? If so, do they follow the STScI Style Guides?
• Are docs added/updated as required? If so, do they follow the STScI Style Guides?
• Did the CI pass? If not, are the failures related?
• Is a change log needed? If yes, is it added to CHANGES.rst?
• Is a milestone set? Milestone is only currently required for PRs related to Imviz MVP.
• After merge, any internal documentations need updating (e.g., JIRA, Innerspace)?

[codecov]

Codecov Report

Merging #1149 (66d1332) into main (a35f93a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1149   +/-   ##
=======================================
  Coverage   76.66%   76.66%           
=======================================
  Files          82       82           
  Lines        6483     6483           
=======================================
  Hits         4970     4970           
  Misses       1513     1513           

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