chore(yarn): update to yarn 4

[framitdavid]

Description

This was quite straightforward to update. The only breaking change that affected us was that workspaces foreach command has a slightly altered syntax.

How I verified the change

• Cypress tests run green locally (except of resourceadm)
• All unit tests passed locally
• Manually tested all packages and build
• DevServer works as expected
• Deleted the node-modules and re-installed all deps

Related Issue(s)

• Update from Yarn 3 to Yarn 4 #11633

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)
• Cypress tests run green locally (https://github.com/Altinn/altinn-studio/tree/master/frontend/testing/cypress#run-altinn-studio-tests)

Documentation

• User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1506614) 83.87% compared to head (098b08a) 83.87%.

❗ Current head 098b08a differs from pull request most recent head 81bc4cc. Consider uploading reports for the commit 81bc4cc to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #11676   +/-   ##
=======================================
  Coverage   83.87%   83.87%           
=======================================
  Files         887      887           
  Lines       13033    13033           
  Branches     1699     1699           
=======================================
  Hits        10931    10931           
  Misses       1845     1845           
  Partials      257      257           

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