[Snyk] Fix for 4 vulnerabilities

[jeremi]

Snyk has created this PR to fix 4 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• requirements.txt

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Important

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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.
• 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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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.59%. Comparing base (41d1c72) to head (427260a).

Additional details and impacted files

@@           Coverage Diff           @@
##             17.0     #561   +/-   ##
=======================================
  Coverage   73.59%   73.59%           
=======================================
  Files         559      559           
  Lines       14056    14056           
  Branches     1792     1792           
=======================================
  Hits        10345    10345           
  Misses       3394     3394           
  Partials      317      317           

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[kneckinator]

Closing. Will be addressed by PR #562