Update dependency php-coveralls/php-coveralls to ^2.8.0

Author: renovate[bot]

composer.json

@@ -17,7 +17,7 @@
     "infection/infection": "^0.29.14",
     "maglnet/composer-require-checker": "^4.16.1",
     "mockery/mockery": "^1.6.12",
-    "php-coveralls/php-coveralls": "^2.7.0",
+    "php-coveralls/php-coveralls": "^2.8.0",
     "php-parallel-lint/php-console-highlighter": "^1.0",
     "php-parallel-lint/php-parallel-lint": "^1.4.0",
     "phpstan/phpstan": "^2.1.14",