Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 semeru--code-code-translation-java-csharp/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 semeru--code-code-translation-java-csharp/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+semeru--code-code-translation-java-csharp/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

semeru--code-code-translation-java-csharp/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ac0521b60056bded34d464de7915f795fb043f3d25c8b5e8d2cf55e5bba9dde1
+size 1323008