Fix deprecated usage

Author: abhi-airspace-intelligence

etl-destinations/tests/integration/delta_test.rs

@@ -32,7 +32,7 @@ mod delta_verification {
     ) -> DeltaResult<()> {
         let table = database.load_table(table_name).await?;
 
-        let schema = table.get_schema()?;
+        let schema = table.snapshot()?.schema();
 
         let fields: Vec<_> = schema.fields().collect();