Update duckdb index files

.gitattributes

@@ -76,3 +76,4 @@ Hindi[[:space:]](HI)/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Italian[[:space:]](IT)/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Italian[[:space:]](IT)/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Italian[[:space:]](IT)/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Multilingual[[:space:]](MULTI)/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Multilingual (MULTI)/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:24783e1eff5148e674e6ede060d74a4bd5f3c99b43d83ea68874deb0af48182d
+size 41431040