Upgrade php-coveralls to 2.4.2

Author: joemcgill

composer.json

@@ -13,7 +13,7 @@
     "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
     "firebase/php-jwt": "^5.0",
     "phpcompatibility/phpcompatibility-wp": "*",
-    "php-coveralls/php-coveralls": "^2.1",
+    "php-coveralls/php-coveralls": "^2.4.2",
     "slowprog/composer-copy-file": "0.2.1",
     "wp-coding-standards/wpcs": "*",
     "xwp/wp-dev-lib": "^1.6.5"