Update duckdb index files

.gitattributes

@@ -1114,3 +1114,4 @@ nl/partial-train/0008.parquet filter=lfs diff=lfs merge=lfs -text
 nl/partial-train/0009.parquet filter=lfs diff=lfs merge=lfs -text
 nl/partial-validation/0000.parquet filter=lfs diff=lfs merge=lfs -text
 fy/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ig/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

ig/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9b2baf948acb708a5722d37e2a7707556f21a545b96c49bfd782da1ffe7060da
+size 1323008