updated VENDORS for 2.7.18
updated VENDORS for 2.7.18

ovelasquez/ussi,ovelasquez/ussi,formapro-forks/api-basic,Tobion/symfony-standard,symfony-cmf/standard-edition,Spea/symfony-standard,uttam-vi/pardawala,stof/symfony-standard,symfony-cmf/standard-edition,stof/symfony-standard,vincentaubert/symfony-standard,kmelia/fresh-symfony,the-software-factory/superhero-api,symfony/symfony-standard,simonjcarr/symfony_rest,debruyne0/symfony,ovelasquez/ussi,debruyne0/symfony,Spea/symfony-standard,black-project/black-standard,black-project/black-standard,uttam-vi/pardawala,uttam-vi/pardawala,the-software-factory/superhero-api,fduch/symfony-standard-workflow,fduch/symfony-standard-workflow,kmelia/fresh-symfony,lyrixx/symfony-standard,kmelia/fresh-symfony,formapro-forks/api-basic,symfony/symfony-standard,egeloen/symfony-standard,lyrixx/symfony-standard,simonjcarr/symfony_rest,egeloen/symfony-standard,vincentaubert/symfony-standard,Tobion/symfony-standard,gencer/symfony-standard,gencer/symfony-standard