Error `trim()`: Passing `null` to parameter #1 (`$string`) of type `string` is deprecated on PHP `8.1`

[remcotolsma]

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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | An error occurred during processing; checking has been aborted. The error message was: trim(): Passing null to parameter #1 ($string) of type string is deprecated in
   |       | /Users/remco/Projects/wp-coding-standards/vendor/wp-coding-standards/wpcs/WordPress/Sniffs/NamingConventions/PrefixAllGlobalsSniff.php on line 280 (Internal.Exception)
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[remcotolsma]

https://github.com/WordPress/WordPress-Coding-Standards/blob/2.3.0/WordPress/Sniffs/NamingConventions/PrefixAllGlobalsSniff.php#L280

[remcotolsma]

This is already fixed WordPress/WordPress-Coding-Standards@e9c4858 on Apr 7, 2021. Unfortunately, after version 2.3.0 of May 14, 2020, no new version has been launched yet. Many are still working hard on version 3.0.0: https://github.com/WordPress/WordPress-Coding-Standards/milestone/25.