Update duckdb index files

.gitattributes

@@ -13,3 +13,4 @@ fr/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+th/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

th/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2736deb971606fe25b69611416bd0535aafde5044865536b0e8977a35801e15
+size 1585152