fix: temporarily downgrade favicons-webpack-plugin

[optionsome]

Proposed Changes

• Downgrading favicons-webpack-plugin because of a hidden deprecation that removed iconstats files. This dependency can be upgraded after feat: add rule to get generated html tags from js jantimon/favicons-webpack-plugin#166 is merged in some form but it will require some code changes in our end.

Pull Request Check List

• A reasonable set of unit tests is included
• Console does not show new warnings/errors
• Changes are documented or they are self explanatory
• This pull request does not have any merge conflicts
• All existing tests pass in CI build
• Code coverage does not decrease (unless measured incorrectly)

Review

• Read and verify the code changes
• Test the functionality by running the UI locally with all popular browsers available in your platform
• Check that the implementation matches the design, when such one is defined in a Jira issue
• Merge the pull request

[codecov]

Codecov Report

Merging #3072 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #3072   +/-   ##
======================================
  Coverage    61.2%   61.2%           
======================================
  Files         288     288           
  Lines        7514    7514           
======================================
  Hits         4599    4599           
  Misses       2915    2915

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