Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ aspect-normalized-out-of-domain/train/index.duckdb filter=lfs diff=lfs merge=lfs
 aspect-normalized-out-of-domain/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 in-domain/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 aspect-normalized-out-of-domain/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+in-domain/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

in-domain/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f642a66bbf782c2c6858c5e1a6f5bbf43f3f317fa527edfd20fccc88f89170d1
+size 445919232