Update duckdb index files

.gitattributes

@@ -1,2 +1,3 @@
 Shunian--kaggle-mbti-cleaned/parquet-test.parquet filter=lfs diff=lfs merge=lfs -text
 Shunian--kaggle-mbti-cleaned/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
+Shunian--kaggle-mbti-cleaned/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Shunian--kaggle-mbti-cleaned/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f1dbeab950288882bc3e17a769efda0162ec6e2b60f6aafdc497d3d92a3b8e84
+size 54276096