chore(deps): update dependency eslint to v8.43.0

[pichlermarc]

Which problem is this PR solving?

Updates eslint to v8.43.0. eslint now defaults to use the new flat config if a "flat" config file (a file called eslint.config.js) is present, which causes eslint to fail if the configuration file does not follow the new format.. However, our "old" file is using that same name and that causes eslint to not accept --ext anymore. (see also eslint/eslint#16531)

This PR updates eslint and renames the top-level config file to a non-reserved name to prevent eslint from assuming we're using the new "flat" configuration.

Based on / Supersedes #3916

Type of change

• internal

How Has This Been Tested?

• ran eslint locally

[codecov]

Codecov Report

Merging #3929 (17c5493) into main (06e919d) will increase coverage by 0.06%.
The diff coverage is n/a.

❗ Current head 17c5493 differs from pull request most recent head abdddab. Consider uploading reports for the commit abdddab to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3929      +/-   ##
==========================================
+ Coverage   93.07%   93.14%   +0.06%     
==========================================
  Files         250      298      +48     
  Lines        7627     8868    +1241     
  Branches     1567     1826     +259     
==========================================
+ Hits         7099     8260    +1161     
- Misses        528      608      +80     

see 51 files with indirect coverage changes