Update duckdb index files

.gitattributes

@@ -184,3 +184,4 @@ tatoeba.kaz/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.kor/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.mal/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.mar/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tatoeba.nld/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

tatoeba.nld/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:442d56a51593b911ea373179fd9894acc4e0e21c7c239c4aa8f6d430d0ad6097
+size 1060864