Update duckdb index files

.gitattributes

@@ -71,3 +71,4 @@ es_ancora-corefud/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_ancora-corefud/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hu_korkor-corefud/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hu_korkor-corefud/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+pl_pcc-corefud/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

pl_pcc-corefud/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10553738acb0a71fed3a36ac4ad0754af0f603a121cd078fd5edd6efec7d3c68
+size 17313792