Update duckdb index files

.gitattributes

@@ -61,3 +61,4 @@ ccby_law/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ccby_s2orc/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ccby_stackexchange/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ccby_stackoverflow/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ccby_wikipedia/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ccby_wikipedia/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d56214506529c952503299bee5c1bece3472b9091e4f07a3e748513c8ec74003
+size 8419815424