SNOW-914688: Update mocha version

[sfc-gh-pbulawa]

Description

Update the mocha version to the newest one in the package and CI.

Checklist

• Format code according to the existing code style (run npm run lint:check -- CHANGED_FILES and fix problems in changed code)
• Create tests which fail without the change (if possible)
• Make all tests (unit and integration) pass (npm run test:unit and npm run test:integration)
• Extend the README / documentation and ensure is properly displayed (if necessary)
• Provide JIRA issue id (if possible) or GitHub issue id in commit message

[sfc-gh-pmotacki]

LGTM

[codecov]

Codecov Report

Merging #673 (bafe819) into master (93eef4d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #673   +/-   ##
=======================================
  Coverage   87.72%   87.72%           
=======================================
  Files          60       60           
  Lines        5590     5590           
=======================================
  Hits         4904     4904           
  Misses        686      686           

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