chore: update Lance to v7.2.0-beta.1 (#3461)

Update the Rust workspace Lance git dependencies and Java lance-core
dependency to v7.2.0-beta.1.

This keeps LanceDB aligned with the latest Lance beta release and
refreshes the Cargo lockfile for the new Lance dependency graph.

rust/lancedb/src/table/datafusion/udtf/fts.rs

@@ -870,8 +870,10 @@ mod tests {
             .await
             .unwrap();
 
-        // Should return empty or nearly empty result
-        assert!(result[0].num_rows() <= 1);
+        assert_eq!(
+            result.iter().map(|batch| batch.num_rows()).sum::<usize>(),
+            0
+        );
     }
 
     #[tokio::test]