Update duckdb index files

.gitattributes

@@ -4,3 +4,4 @@ sinhala-nlp--SOLD/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sinhala-nlp--SOLD/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c00c20e2a458d3300902fd2e38da7116d087a930a00009d5cacdc38d44c022c6
+size 1847296