fix: add the sp1_chunk_aggregator_vk_hash field to config

Author: maximopalopoli

aggregation_mode/proof_aggregator/src/backend/config.rs

@@ -24,6 +24,7 @@ pub struct Config {
     pub proofs_per_chunk: u16,
     pub total_proofs_limit: u16,
     pub risc0_chunk_aggregator_image_id: String,
+    pub sp1_chunk_aggregator_vk_hash: String,
     pub monthly_budget_eth: f64,
 }