Update duckdb index files

.gitattributes

@@ -12,3 +12,4 @@ fr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fr/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+hi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

hi/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:35e2e94d6c319a0be5d66d0fad7b04a4179c149112812a9a7d22adcff9906ecb
+size 1585152