perf!: replace glob package with node:fs glob

[mostafaNazari702]

PR Checklist

• Addresses an existing open issue: fixes ⚡️ Performance: Replace glob package with built-in node:fs .glob #5962
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Replace the "glob" dependency with Node's built-in node:fs glob plus "minimatch" (which Mocha already depends on, and which glob is itself built on). Removed glob from production dependencies, shrinking what users install.

IMPROTANT

This is a breaking change (semver-major): fs.globSync is only available on Node 22+ and so this drops support for Node.js 20. engines is now >=22.12.0, and the CI matrix and docs are updated to match.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.62%. Comparing base (bf76999) to head (7397618).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6098      +/-   ##
==========================================
- Coverage   82.64%   82.62%   -0.03%     
==========================================
  Files          62       62              
  Lines        4668     4661       -7     
  Branches     1003     1032      +29     
==========================================
- Hits         3858     3851       -7     
  Misses        810      810              

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[JoshuaKGoldberg]

LGTM, nice switch. I tinkered with this a bunch locally. It's a pity we'll have to wait so long to get it in 😢.

[mark-wiemer]

Blocked on starting v13