Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+ELTE-DH--huPWKP/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

ELTE-DH--huPWKP/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:716cd06b6d1579a7ccaeb2ecadbc99ae25eb7135ed3bb9b831f664680ebb2417
+size 2633728