Update duckdb index files

.gitattributes

@@ -26,3 +26,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zstandard filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 Karavet--ILUR-news-text-classification-corpus/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Karavet--ILUR-news-text-classification-corpus/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Karavet--ILUR-news-text-classification-corpus/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c48e3d6658ce73febede445905f7fa94b31e114f71a010f89d9e71fbbb4fee1
+size 32518144