Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 knkarthick--highlightsum/csv-train.parquet filter=lfs diff=lfs merge=lfs -text
 knkarthick--highlightsum/csv-test.parquet filter=lfs diff=lfs merge=lfs -text
 knkarthick--highlightsum/csv-validation.parquet filter=lfs diff=lfs merge=lfs -text
+knkarthick--highlightsum/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

knkarthick--highlightsum/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd492f50f2bf6da16a9c9a6d6ba332197f51e930a82703bb5bb1c3f002b66ccd
+size 4730880