[APMSP-2695] ci: update mergegate to support dd-octo-sts pool of apps#1697

VianneyRuhlmann wants to merge 1 commit intomainDataDog/libdatadog:mainfrom

dd-octo-sts-pool-migrationDataDog/libdatadog:dd-octo-sts-pool-migrationCopy head branch name to clipboard