Update duckdb index files

.gitattributes

@@ -8,3 +8,4 @@ es/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fr/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+fr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

fr/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1d58c229b2b5d7980441ecf03cd071db1b32d4f8c61b6286840dbbf468921204
+size 1847296