Update duckdb index files

.gitattributes

@@ -153,3 +153,4 @@ accountant/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 accountant/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
 art_studies/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 art_studies/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
+art_studies/val/index.duckdb filter=lfs diff=lfs merge=lfs -text

art_studies/val/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8f05d0be1a6d64b2d6696b0db405afd1a8ee707ec6334f48e6b375ca3ff6bd81
+size 1060864