Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ Patt--MultiRC_TH/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Patt--MultiRC_TH/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Patt--MultiRC_TH/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:415882cd330577a808c24cdd6adc4d1b4d60ac05aaedb506ac32a1870a673629
+size 109064192