rtmp-services: Increase FB max bitrate to 6Mbps

Facebook Live now recommends 6000kbps for most streamers and the auto
capping is clamping users to 4000kpbs. This fixes the new suggested
setting.

plugins/rtmp-services/data/package.json

 {
 	"url": "https://obsproject.com/obs2_update/rtmp-services",
-	"version": 116,
+	"version": 117,
 	"files": [
 		{
 			"name": "services.json",
-			"version": 116
+			"version": 117
 		}
 	]
 }

plugins/rtmp-services/data/services.json

@@ -575,7 +575,7 @@
             "recommended": {
                 "keyint": 2,
                 "profile": "main",
-                "max video bitrate": 4000,
+                "max video bitrate": 6000,
                 "max audio bitrate": 128
             }
         },