Prebid 2.15.0 Release

🚀New Features

• Orbidder adapter uses onSetTargeting callback (#3804)
• New Adapter - Imonomy network BidAdapter (#3765)
• mgid adapter: native support, minor changes #3774

🛠Maintenance

• specify ad units set targeting for ast (#3805)
• RichAudience: Files name updated (#3793)
• Improve Digital adapter: Endpoint update (#3811)
• Sharethrough adapter: support for Prebid.js User ID module (#3819)
• Cedato adapter: added iframe user sync support (#3822)
• Gamoshi: Remove and update some bid response properties #3806
• update fun-hooks and use no-eval version for CSP #3814

🐛Bug Fixes