Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 Adapting--Knowledge-Driven-Dialogues/csv-train.parquet filter=lfs diff=lfs merge=lfs -text
 Adapting--Knowledge-Driven-Dialogues/csv-validation.parquet filter=lfs diff=lfs merge=lfs -text
 Adapting--Knowledge-Driven-Dialogues/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Adapting--Knowledge-Driven-Dialogues/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

Adapting--Knowledge-Driven-Dialogues/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c613c0383be4173c0992ea33d552bc9d73ef31d7e431a87f5a20299ba3517913
+size 14692352