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--PWKP_cleaned/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

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

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b4856659e8c7d8cbe885dbfa724b799872fe40feb2923c19a17db1313c2e1f5
+size 2109440