Temporarily use php-coveralls mirror to bypass Github limits
Temporarily use php-coveralls mirror to bypass Github limits

See https://github.com/webonyx/graphql-php/commit/949e6f2057ab38decfd5242f5eb2a229899357e0/checks?check_suite_id=404111226
Until this gets merged and released https://github.com/php-coveralls/php-coveralls/pull/275

webonyx/graphql-php