Update duckdb index files

.gitattributes

@@ -239,3 +239,4 @@ yoruba/xlsum-test.parquet filter=lfs diff=lfs merge=lfs -text
 yoruba/xlsum-validation.parquet filter=lfs diff=lfs merge=lfs -text
 amharic/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 amharic/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+amharic/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

amharic/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c240efa2b89f7f81dea1bea4b946354fc54cf0f376796282948ea4010b4ec5b8
+size 3420160