Update duckdb index files

.gitattributes

@@ -3,3 +3,4 @@ reubenjohn--stackoverflow-unified-text-open-status-classification-sample/parquet
 reubenjohn--stackoverflow-unified-text-open-status-classification-sample/parquet-test.parquet filter=lfs diff=lfs merge=lfs -text
 reubenjohn--stackoverflow-unified-text-open-status-classification-sample/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 reubenjohn--stackoverflow-unified-text-open-status-classification-sample/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text
+reubenjohn--stackoverflow-unified-text-open-status-classification-sample/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

reubenjohn--stackoverflow-unified-text-open-status-classification-sample/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98fd13f5be9094a015600ac3de434d00249259776193636f6b93ff6d3df58d40
+size 447229952