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
 souljoy--COVID-19_weibo_emotion/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+souljoy--COVID-19_weibo_emotion/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

souljoy--COVID-19_weibo_emotion/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6db8ac3a2dcf354368aa6ee810c8f759a1a12f0b268135145cd6f3fd3c6c7f33
+size 2633728