Prebid 11.21.0 Release

In This Release

🏛 Core PRs

• Core: fix: guard renderer lookup when bid has no ad unit (#15232)
• Linting: harden superfluous argument rule and expand to tests (#15178)
• Linting: catch implicit operand conversions (#15164)
• bidResponseFilter: fix attr enforcement incorrectly expecting a single attribute in meta.attr (#15231)
• Linting: prevent redundant conditionals (#15165)
• Core: update browserslist target (#15227)
• GH Actions: use node 24 versions and replace github-app-token usage (#15221)

🛠 Maintenance

• Brid bid adapter: remove unused sizes logic (#15243)
• Consent Management USP: fix spec lint error (#15240)
• Allegro Bid Adapter: fix config stub tests (#15239)
• Medianet Analytics Adapter Updates (#15111)
• Tests: enforce unused variable checks (#15161)
• Mediago bidder: enforce Compatible parameter data types for gpid (#15235)
• Yahoo Ads Bid Adapter: remove custom header and use text/plain content type (#15226)
• TTD Bid Adapter: configurable endpointCompression support (#15233)
• Onetag Bid Adapter: add category and creative attribute meta fields in interpretResponse (#15216)
• ADBRO Bid Adapter: Device Connection Type support for Bid Request (#15187)
• Allegro Bid Adapter: update bidder URL and expose advertiser metadata (#15148)
• Uniquest Bid Adapters: send im_uid from Intimatemerger EID (#15215)