Update duckdb index files

.gitattributes

@@ -72,3 +72,4 @@ swa/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 swa/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 twi/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 twi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+twi/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

twi/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f36018b6ecc0d6c3f5653fb129d8fc68aa7a9070ec75c0e2402da121d89e838
+size 1060864