Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 Amalq--taskA_data/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Amalq--taskA_data/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/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:e4ecf539f7c834969691f3b4247d9216beeaaf7c5ace78b7205388dd4607295b
+size 2633728