Update duckdb index files

.gitattributes

@@ -67,3 +67,4 @@ german/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 italian/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 italian/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 italian/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
+portuguese/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text

portuguese/dev/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e5cd4792d97f4aacdf99a750305bd2a8ec5a7cbe0a55b58fb8eabf04e36482d7
+size 498348032