Update duckdb index files

.gitattributes

@@ -25,3 +25,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zstandard filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+CALM--arwiki/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

CALM--arwiki/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26d3c94706c6768aa0421d7c4ee780d7dc8f455026f08fbdb57778cf508b4a48
+size 6036926464