Update duckdb index files

.gitattributes

@@ -366,3 +366,4 @@ pidgin/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hindi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 persian/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 russian/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+portuguese/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

portuguese/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:62be9768473fe065fc9d40738831050701ad97b5da70ff68b17d03c8e79a0943
+size 471871488