Update PHP_CodeSniffer repository link

[rodrigoprimo]

PHP_CodeSniffer has moved to a new GitHub organization. The squizlabs/PHP_CodeSniffer repository is now archived and the project is actively maintained at https://github.com/PHPCSStandards/PHP_CodeSniffer.

See: squizlabs/PHP_CodeSniffer#3932

[Copilot]

Pull request overview

Updates contributor documentation to reflect PHP_CodeSniffer’s new upstream repository location after the original repository was archived.

Changes:

• Update the PHP_CodeSniffer GitHub link in CONTRIBUTING.md from squizlabs/PHP_CodeSniffer to PHPCSStandards/PHP_CodeSniffer.

[GromNaN]

Thanks, I confirmed thanks to squizlabs/PHP_CodeSniffer#3933

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.75%. Comparing base (1265ac8) to head (8b530f1).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff              @@
##               v2.x    #1864      +/-   ##
============================================
+ Coverage     87.72%   87.75%   +0.03%     
  Complexity     3308     3308              
============================================
  Files           447      447              
  Lines          6607     6607              
============================================
+ Hits           5796     5798       +2     
+ Misses          811      809       -2     

Flag	Coverage Δ
6.0-replica_set	86.58% <ø> (?)
6.0-server	82.60% <ø> (ø)
6.0-sharded_cluster	86.37% <ø> (?)
8.0-replica_set	87.61% <ø> (ø)
8.0-server	83.35% <ø> (ø)
8.0-sharded_cluster	87.45% <ø> (?)

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