fix: add missing datafusion-datasource dependency

The csv_scan.rs file added in apache#3044 uses datafusion_datasource but
the dependency was not added to core/Cargo.toml.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: andygrove

native/core/Cargo.toml

@@ -60,6 +60,7 @@ tempfile = "3.24.0"
 itertools = "0.14.0"
 paste = "1.0.14"
 datafusion = { workspace = true, features = ["parquet_encryption", "sql"] }
+datafusion-datasource = { workspace = true }
 datafusion-spark = { workspace = true }
 once_cell = "1.18.0"
 regex = { workspace = true }