Seedtag: Adds GPP macros on user-sync url (#4106)

Author: sangarbe

src/main/resources/bidder-config/seedtag.yaml

@@ -12,6 +12,6 @@ adapters:
     usersync:
       cookie-family-name: seedtag
       iframe:
-        url: https://s.seedtag.com/cs/cookiesync/prebid?gdpr={{gdpr}}&gdpr_consent={{gdpr_consent}}&usp_consent={{us_privacy}}&redirect={{redirect_url}}
+        url: https://s.seedtag.com/cs/cookiesync/prebid?gdpr={{gdpr}}&gdpr_consent={{gdpr_consent}}&usp_consent={{us_privacy}}&gpp={{gpp}}&gpp_sid={{gpp_sid}}&redirect={{redirect_url}}
         support-cors: false
         uid-macro: '$UID'