revert change of matrix room for release messages

Jenkinsfile

@@ -365,7 +365,7 @@ Void sendFailureMessage() {
         room = "!GjqhmouBtnDbwUkAjx:matrix.ozg-sh.de"
     }
     else if (env.BRANCH_NAME == 'release') {
-        room = "!GDensDhSaOmnenOBAu:matrix.ozg-sh.de"
+        room = "!oWZpUGTFsxkJIYNfYg:matrix.ozg-sh.de"
     }
 
     sh "curl -XPOST -H 'authorization: Bearer ${getElementAccessToken()}' -d '${data}' https://matrix.ozg-sh.de/_matrix/client/v3/rooms/$room/send/m.room.message"