Update duckdb index files

Kamaljp--articles_samples/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:624f8fcdbf6ed1b467d324501a89c68404b7f582514539b42fc00ad58cb33878
-size 688140288
+oid sha256:da17984143a0acca16b2fae0b2302b01485a146e425ef83427c48f6796305917
+size 687353856