Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 argilla--news-summary/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 argilla--news-summary/parquet-test.parquet filter=lfs diff=lfs merge=lfs -text
 argilla--news-summary/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+argilla--news-summary/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

argilla--news-summary/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:286501bdf95495e5cf41a3db123cbd25411827883269209ce5594cb83b5f1a2e
+size 5255168