rtmp-services: Update Picarto maximum bitrates

Update maximum video bitrate for Picarto from 2000 to 3500 and maximum
audio bitrate from 160 to 128.
http://help.picarto.tv/knowledge_base/topics/how-to-configure-open-broadcaster-software

plugins/rtmp-services/data/package.json

 {
 	"url": "https://obsproject.com/obs2_update/rtmp-services",
-	"version": 55,
+	"version": 56,
 	"files": [
 		{
 			"name": "services.json",
-			"version": 55
+			"version": 56
 		}
 	]
 }

plugins/rtmp-services/data/services.json

@@ -842,8 +842,8 @@
             "recommended": {
                 "keyint": 2,
                 "profile": "main",
-                "max video bitrate": 2000,
-                "max audio bitrate": 160
+                "max video bitrate": 3500,
+                "max audio bitrate": 128
             }
         },
         {