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
 linear-equation-training.txt filter=lfs diff=lfs merge=lfs -text
+arnoudbuzing--linear-equation-training/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

arnoudbuzing--linear-equation-training/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ccf05c06a0cce0ea4986e0ecc8915f772d7915522c58eccc145f2a2d02b20ad7
+size 9449472