Update duckdb index files

.gitattributes

@@ -71,3 +71,4 @@ swa/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:380ee13bc525b5df15260e9f405cfbb4e26d0b5c20200b229ac6f4f0691372a0
+size 1060864