refine: make commit more general (#1048)

## Which issue does this PR close?

- Closes 

## What changes are included in this PR?


change the input param type of commit to make it more general. I think
the performance impact for this is minor.

## Are these changes tested?



Co-authored-by: ZENOTME <[email protected]>

Author: ZENOTME

crates/iceberg/src/transaction.rs

@@ -163,7 +163,7 @@ impl<'a> Transaction<'a> {
     }
 
     /// Commit transaction.
-    pub async fn commit(self, catalog: &impl Catalog) -> Result<Table> {
+    pub async fn commit(self, catalog: &dyn Catalog) -> Result<Table> {
         let table_commit = TableCommit::builder()
             .ident(self.table.identifier().clone())
             .updates(self.updates)