Update duckdb index files

.gitattributes

@@ -36,3 +36,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.ogg filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
 queries/queries/index.duckdb filter=lfs diff=lfs merge=lfs -text
+corpus/corpus/index.duckdb filter=lfs diff=lfs merge=lfs -text

corpus/corpus/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4f0e472cbae419547a474af035216dba391dacbda492864f7aa2d5152335fa06
+size 7455911936