Update duckdb index files

.gitattributes

@@ -6,3 +6,4 @@ dojo--newsgroups/validation/0000.parquet filter=lfs diff=lfs merge=lfs -text
 dojo--newsgroups/training/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/validation/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/training/0000.parquet filter=lfs diff=lfs merge=lfs -text
+default/training/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/training/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:afef4757aa372ecb96c778164950f00be55e57ca6ebb0d767dea5ad5596ffa6e
+size 26488832