Fix signer get_up_to_block_number_condition for block range root

It diverged from the aggregator, instead of checking the end with a
exclusive '<' it checked it with an inclusive '<=', changing the output.

Author: Alenar

mithril-signer/src/database/provider/block_range_root/get_block_range_root.rs

@@ -18,7 +18,7 @@ impl<'client> GetBlockRangeRootProvider<'client> {
     }
 
     pub fn get_up_to_block_number_condition(&self, block_number: BlockNumber) -> WhereCondition {
-        WhereCondition::new("end <= ?*", vec![Value::Integer(block_number as i64)])
+        WhereCondition::new("end < ?*", vec![Value::Integer(block_number as i64)])
     }
 }