fix: increase pricing fetch timeout to 180s for AWS

AWS pricing generation creates ~25K records (870 instances × 29 regions)
which requires more time for D1 upsert operations.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/services/sync.ts

@@ -330,7 +330,7 @@ export class SyncOrchestrator {
           dbG8Map,
           dbVpuMap
         ),
-        60000,
+        180000, // AWS needs ~25K records upsert (870 instances × 29 regions)
         `${provider} fetch pricing`
       );