DeepBook Indexer: update net balances query (#20037)

## Description 

Describe the changes or additions included in this PR.
Update the DeepBook indexer API.

## Test plan 

How did you test the new or updated feature?
Local testing end to end.

---

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] Indexer: 
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:
- [ ] REST API:

crates/sui-deepbook-indexer/src/server.rs

@@ -152,10 +152,10 @@ async fn get_net_deposits(
 ) -> Result<Json<HashMap<String, i64>>, DeepBookError> {
     let connection = &mut state.pool.get().await?;
     let mut query =
-        "SELECT asset, SUM(amount)::bigint AS amount, deposit FROM balances WHERE timestamp < to_timestamp("
+        "SELECT asset, SUM(amount)::bigint AS amount, deposit FROM balances WHERE checkpoint_timestamp_ms < "
             .to_string();
     query.push_str(&timestamp);
-    query.push_str(") AND asset in (");
+    query.push_str("000 AND asset in (");
     for asset in asset_ids.split(",") {
         if asset.starts_with("0x") {
             let len = asset.len();