Update duckdb index files

.gitattributes

@@ -1146,3 +1146,4 @@ en/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en.noblocklist/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 et/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fa/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+eu/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

eu/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2f21e0cab9f6c901092cce89671e3c035b88ae93de49cb7065706119d9810900
+size 11022336