Modify medianet doc (#6197)

* MODIFY medianet bidder doc with latest supported features

* UPDATE userIds feature for medianet

Author: vivekyadav15

dev-docs/bidders/medianet.md

@@ -7,15 +7,24 @@ tcfeu_supported: true
 media_types: banner,native,video
 usp_supported: true
 coppa_supported: true
-gpp_supported: true
-userIds: britepoolId, criteo, id5Id, identityLink, liveIntentId, netId, parrableId, pubCommonId, unifiedId
+userIds: all
 prebid_member: true
 pbjs: true
 gvl_id: 142
 schain_supported: true
 floors_supported: true
 pbs: true
 sidebarType: 1
+gpp_sids: tcfeu, tcfca, usnat, usstate_all, usp
+safeframes_ok: true
+pbs_app_supported: true
+multiformat_supported: will-bid-on-any
+dsa_supported: true
+dchain_supported: false
+deals_supported: true
+fpd_supported: true
+privacy_sandbox: paapi, topics
+endpoint_compression: false
 ---
 
 ### Bid Params