chore(main): release 12.0.0-rc.4

[github-actions]

🤖 I have created a release beep boop

12.0.0-rc.4 (2026-07-23)

⚠ BREAKING CHANGES

• replace yargs with Node.js util.parseArgs (#6164)

🧹 Chores

• replace yargs with Node.js util.parseArgs (#6164) (21a3902)

---

This PR was generated with Release Please. See documentation.

[JoshuaKGoldberg]

/home/runner/work/mocha/mocha/docs/_data/supporters.cjs
Error:    20:23  error  /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: Unexpected end of JSON input                                                                                                                n/no-missing-require
Error:   305:11  error  /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: /home/runner/work/mocha/mocha/docs/node_modules/debug/package.json (directory description file): SyntaxError: Unexpected end of JSON input  n/no-missing-require

shakes fist at github stability issues - not relevant

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.90%. Comparing base (21a3902) to head (2acf0d4).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6169   +/-   ##
=======================================
  Coverage   81.90%   81.90%           
=======================================
  Files          64       64           
  Lines        4864     4864           
  Branches     1072     1072           
=======================================
  Hits         3984     3984           
  Misses        880      880           

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[github-actions]

🤖 Created releases:

• v12.0.0-rc.4

🌻