fix: switch to @eslint-community/eslint-utils

[bmish]

Title: refactor: replace eslint-utils with @eslint-community/eslint-utils

Summary

• The eslint-utils package is deprecated. Replaced it with the actively maintained fork @eslint-community/eslint-utils, which has an identical ReferenceTracker API.
• Updated the require in 5 rules: no-assert-equal, no-global-assertions, no-global-expect, no-global-module-test, no-global-stop-start.
• Swapped the dependency in package.json from eslint-utils ^3.0.0 to @eslint-community/eslint-utils ^4.4.0.

Test plan

• All existing tests pass unchanged. This is a drop-in replacement with no behavioral changes.

Fixes #655.

[github-actions]

Pull Request Test Coverage Report for Build 21775783649

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 5 of 5 (100.0%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.12%

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Totals
Change from base Build 21775772383:	0.0%
Covered Lines:	1012
Relevant Lines:	1086

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💛 - Coveralls