chore: update Karma to recent version

[shumkov]

Issue being fixed or feature implemented

└─ socket.io
   ├─ ID: 1097675
   ├─ Issue: socket.io has an unhandled 'error' event
   ├─ URL: https://github.com/advisories/GHSA-25hc-qcg6-38wj
   ├─ Severity: high
   ├─ Vulnerable Versions: >=3.0.0 <4.6.2
   │ 
   ├─ Tree Versions
   │  └─ 4.5.2
   │ 
   └─ Dependents
      └─ karma@npm:6.4.1

What was done?

• Updated Karma to 6.4.3

How Has This Been Tested?

None

Breaking Changes

None

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
• I have made corresponding changes to the documentation if needed

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone