Update duckdb index files

.gitattributes

@@ -64,3 +64,4 @@ 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 sha256:887092c7cfb33a4637ca08910bec02d71da103cb675ec9b6fa63d4ad3140f0ca
+size 2633728