Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ train.csv filter=lfs diff=lfs merge=lfs -text
 validation.csv filter=lfs diff=lfs merge=lfs -text
 g8a9--europarl_en-it/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 g8a9--europarl_en-it/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+g8a9--europarl_en-it/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

g8a9--europarl_en-it/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f3e57be55e572f2e103f27078297b0d63df173ca62fc3e4543b4d55dc38d112
+size 776744960