Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 kejian--codesearchnet-python-pep8-v1/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 kejian--codesearchnet-python-pep8-v1/parquet-test.parquet filter=lfs diff=lfs merge=lfs -text
 kejian--codesearchnet-python-pep8-v1/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+kejian--codesearchnet-python-pep8-v1/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

kejian--codesearchnet-python-pep8-v1/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9062a36d3b689bbf9b7f08d08b73717240f7cead28e792864748ba0474fb46a7
+size 432025600