Update duckdb index files

.gitattributes

@@ -65,3 +65,4 @@ cs-et/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs-fi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs-fr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs-hu/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs-it/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs-it/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7ae9b32872dca7c3878f3d259ea845e3fd9593006155eb23647f99be3e687332
+size 45887488