Update duckdb index files

.gitattributes

@@ -1,2 +1,3 @@
 AlekseyKorshuk--amazon-reviews-input-output/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 AlekseyKorshuk--amazon-reviews-input-output/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+AlekseyKorshuk--amazon-reviews-input-output/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

AlekseyKorshuk--amazon-reviews-input-output/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c4f35da6ca533068534cf069eb2d2936a9769e64962d0eb126931a8b2903378
+size 1060864