Build/Test Tools: Use the latest PHP version for the coding standards…

… workflow.

PHPCS can now be run on the latest PHP version as all known PHP 8.x compatibility issues (in WPCS) have been fixed.

Follow-up to [49162], [56695].

Props jrf, desrosj.
See #59161.

git-svn-id: https://develop.svn.wordpress.org/trunk@56696 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/coding-standards.yml

@@ -77,7 +77,7 @@ jobs:
       - name: Set up PHP
         uses: shivammathur/setup-php@4bd44f22a98a19e0950cbad5f31095157cc9621b # v2.25.4
         with:
-          php-version: '7.4'
+          php-version: 'latest'
           coverage: none
           tools: cs2pr