Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 2D_Lattice.csv filter=lfs diff=lfs merge=lfs -text
+cmudrc--Add2DLattice/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cmudrc--Add2DLattice/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2fcebdaa1c7a10c38d775102ecf924f02f5da2563b6444f09c8856f479870325
+size 715141120