[Snyk] Fix for 18 vulnerabilities

[jamesbhobbs]

Snyk has created this PR to fix 18 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• build/venv-test-ipywidgets8-requirements.txt

⚠️ Warning

otebook 6.5.7 requires pyzmq, which is not installed.
matplotlib 3.5.3 requires fonttools, which is not installed.
matplotlib 3.5.3 requires pillow, which is not installed.
jupyter 1.1.1 requires jupyterlab, which is not installed.
jupyter-server 1.24.0 requires pyzmq, which is not installed.
jupyter-console 6.6.3 requires pyzmq, which is not installed.
jupyter-client 7.4.9 requires pyzmq, which is not installed.
ipympl 0.9.3 requires pillow, which is not installed.
ipykernel 6.16.2 requires pyzmq, which is not installed.

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• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.
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• Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the affected dependencies could be upgraded.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72%. Comparing base (71dffde) to head (c557541).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #128   +/-   ##
=====================================
  Coverage     72%     72%           
=====================================
  Files        539     539           
  Lines      41267   41267           
  Branches    5012    5012           
=====================================
  Hits       30001   30001           
  Misses      9592    9592           
  Partials    1674    1674           

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