Attempt to update twitter media posting to api v2

Seems posting with images got broken in the update to api v2, let's see
if the fix is this simple.

postgresqleu/util/messaging/twitter.py

@@ -248,7 +248,9 @@ def post(self, tweet, image=None, replytotweetid=None):
             }, timeout=30)
             if r.status_code != 200:
                 return (None, 'Media upload: {}'.format(r.text))
-            d['media_ids'] = r.json()['media_id']
+            d['media'] = {
+                'media_ids': r.json()['media_id'],
+            }
 
         while d['text']:
             r = self.tw.post('https://api.twitter.com/2/tweets', json=d, timeout=30)