Update duckdb index files

.gitattributes

@@ -3,3 +3,4 @@ Pavithree--eli5_55/json-test.parquet filter=lfs diff=lfs merge=lfs -text
 Pavithree--eli5_55/json-validation.parquet filter=lfs diff=lfs merge=lfs -text
 Pavithree--eli5_55/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Pavithree--eli5_55/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Pavithree--eli5_55/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Pavithree--eli5_55/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3fa593e5e7c2e317da7fca7d42712193096a2747ec4273d66e6ececa2e0fcd7d
+size 736112640