Run CI tests in Node 21

Fix `no-object-constructor` autofix after JSX nodes

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 3 to 4.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v3...v4)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* docs: explained report fixers and suggestions

* Apply suggestions from code review

Co-authored-by: Nicholas C. Zakas <nicholas@humanwhocodes.com>

* Post-suggestion fix: rule-categories.macro.html link

---------

Co-authored-by: Nicholas C. Zakas <nicholas@humanwhocodes.com>

* Different ways to handle tabs

* Option to remove Playground links

* use tabs with `markdownlint-disable` comments

* add missing `eslint` comments

* Apply review suggestions

* Remove comments from `no-mixed-spaces-and-tabs`

* fix: ensure that exit code for fatal errors is not overwritten

* Add comments

* update test

* feat: Add suggestion for no-prototype-builtins

Suggest a fix e.g. a.hasOwnProperty(b) -> Object.prototype.hasOwnProperty.call(a, b). However, if the method call follows an optional chain, then make no suggestions.

* Don't provide suggestion if Object is shadowed or not in globals

* Add parentheses back for SequenceExpression

* Give no suggestion if no-unsafe-optional-chaining

* feat: Deprecate formatting rules

Fixes #17522

* Add deprecation notice to rule files

* Fix tests

* Update eslint:all test

* Add deprecation notice to docs

* Clarify error message for rule check

* Update eslint:all test