CI: fix nyc doesn't proxy error status from mocha (#1353)
CI: fix nyc doesn't proxy error status from mocha (#1353)


graphql/graphql-js,graphql/graphql-js,jjergus/graphql-js,enaqx/graphql-js,enaqx/graphql-js,graphql/graphql-js,jjergus/graphql-js,enaqx/graphql-js