fix(ceremony): reduce polling (#3170)

As the queue gets bigger and bigger I think it's better to reduce the
request a bit

Author: Swepool

ceremony/src/lib/state/contributor.svelte.ts

@@ -67,8 +67,8 @@ type QueueInfoResult = QueueInfoSuccess | QueueInfoError
 
 const second = 1000
 const CLIENT_POLING_INTERVAL = second * 5
-const CONTRIBUTION_POLLING_INTERVAL = second * 5
-const QUEUE_POLLING_INTERVAL = second * 15
+const CONTRIBUTION_POLLING_INTERVAL = second * 15
+const QUEUE_POLLING_INTERVAL = second * 30
 
 export class Contributor {
   userId = $state<string | undefined>(undefined)