fix(node_framework): Fix the connection pool size for the catchup task (

#2046)

## What ❔

`AsyncRocksdbCache` requires at least 2 connections, but in the glue it
was provided with only 1.

## Why ❔

Bug

## Checklist

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- [ ] PR title corresponds to the body of PR (we generate changelog
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- [ ] Tests for the changes have been added / updated.
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core/node/node_framework/src/implementations/layers/state_keeper/mod.rs

@@ -77,7 +77,7 @@ impl WiringLayer for StateKeeperLayer {
             max_open_files: self.db_config.experimental.state_keeper_db_max_open_files,
         };
         let (storage_factory, task) = AsyncRocksdbCache::new(
-            master_pool.get_singleton().await?,
+            master_pool.get_custom(2).await?,
             self.db_config.state_keeper_db_path,
             cache_options,
         );