Update duckdb index files

.gitattributes

@@ -262,3 +262,4 @@ fr-faq-domain/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 it-faq-domain/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 it-faq-page/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 it-faq-question/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+nl-all-question/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

nl-all-question/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:61229236a9c7e25d94c56582ff70c2cc26f2473e2e50f2081615257968c8abd9
+size 6270234624