Update dependency phpstan/phpstan-phpunit to v1.2.1 (#1237)
Update dependency phpstan/phpstan-phpunit to v1.2.1 (#1237)

Co-authored-by: renovate[bot] <1d2c67ad0e3429d16690809152e1083ff6af8a05@users.noreply.github.com>
webonyx/graphql-php