Update php-coveralls/php-coveralls requirement from ^2.2 to ^2.4

Updates the requirements on [php-coveralls/php-coveralls](https://github.com/satooshi/php-coveralls) to permit the latest version.
- [Release notes](https://github.com/satooshi/php-coveralls/releases)
- [Changelog](https://github.com/php-coveralls/php-coveralls/blob/master/CHANGELOG.md)
- [Commits](php-coveralls/php-coveralls@v2.2.0...v2.4.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.json

@@ -20,7 +20,7 @@
     "require-dev": {
         "ext-simplexml": "*",
         "friendsofphp/php-cs-fixer": "^2.16",
-        "php-coveralls/php-coveralls": "^2.2",
+        "php-coveralls/php-coveralls": "^2.4",
         "phpunit/phpunit": "^9.4",
         "roave/security-advisories": "dev-master",
         "squizlabs/php_codesniffer": "^3.5",