updated VENDORS for 2.7.12
updated VENDORS for 2.7.12

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