Prebid 2.18.0 Release

🚀New Features

• New User ID Submodule for Digitrust (#3867)
• New Analytics Adapter STAQ (#3772)

🛠Maintenance

• Adxcg Adapter - added pubcid (#3824)
• always adding originalCpm and originalCurrency to bid object (#3856)
• Rubicon Project - add size 640x380 (#3877)
• Admixer - BIDDER_CODE check removed (#3862)
• Minor change on AdYouLike bidderAdaptor (#3864)
• NextMillennium: changed adapter name (#3875)

🐛Bug Fixes

• getCpmInNewCurrency to use current value of bid.cpm and bid.currency (#3845)
• Orbidder - Bugfix add bid parameters if not present (#3808)
• Use actual global object name in log message #3874