Update duckdb index files

.gitattributes

@@ -324,3 +324,4 @@ serbian_latin/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sinhala/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sinhala/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sinhala/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+somali/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

somali/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1520954555b2b6dfe4edc882beba8a81e18366daf0922bb30fda07eacab31a14
+size 6565888