Update duckdb index files

.gitattributes

@@ -585,3 +585,4 @@ gdscript/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 kotlin/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mupad/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 nit/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+jupyter-notebook/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

jupyter-notebook/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dc9f9be3ecb36a2d95922714d14f51c1f36fb6b9d0c2f3f2386dc1248f0e7bf8
+size 1060864