Upgrade to Contact 0.4.2 and Web30 0.10.8

This patch updates to the latest contact version. Fixing some block
parsing issues and response size issues we're seeing as the Althea
testnet continues to scale up.

Web30 was having issues with log sizes, this commit also reduces the
search block interval from 50k to 5k combined with the size increase in
response buffers this should be more than sufficient.

Author: jkilpatr

orchestrator/Cargo.lock

@@ -22,7 +22,7 @@ pub async fn get_last_checked_block(
     web3: &Web3,
 ) -> Uint256 {
     let mut grpc_client = grpc_client;
-    const BLOCKS_TO_SEARCH: u128 = 50_000u128;
+    const BLOCKS_TO_SEARCH: u128 = 5_000u128;
 
     let latest_block = get_block_number_with_retry(web3).await;
     let mut last_event_nonce: Uint256 =

orchestrator/orchestrator/src/oracle_resync.rs

@@ -18,7 +18,7 @@ pub async fn find_latest_valset(
     peggy_contract_address: Address,
     web3: &Web3,
 ) -> Result<Valset, PeggyError> {
-    const BLOCKS_TO_SEARCH: u128 = 50_000u128;
+    const BLOCKS_TO_SEARCH: u128 = 5_000u128;
     let latest_block = web3.eth_block_number().await?;
     let mut current_block: Uint256 = latest_block.clone();
     let latest_ethereum_valset =