Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 UCC_EN_TH.csv filter=lfs diff=lfs merge=lfs -text
+nakcnx--Thai-UCC/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

nakcnx--Thai-UCC/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b7af6a445ad62f66c69c430162d618d8f442e206b79de1fccf05f35e9010215
+size 18886656