Update interval count in lemon-squeezy-webhook-handler

The interval count value for yearly subscriptions in the lemon-squeezy-webhook-handler service has been corrected. It was previously set to 12, which inaccurately represented a monthly subscription, so it has been updated to reflect the correct annual figure of 1.

packages/billing/lemon-squeezy/src/services/lemon-squeezy-webhook-handler.service.ts

@@ -441,6 +441,6 @@ function getSubscriptionIntervalType(renewsAt: string) {
 
   return {
     interval: 'year',
-    intervalCount: 12,
+    intervalCount: 1,
   };
 }