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
 lex_fridman_podcast.csv filter=lfs diff=lfs merge=lfs -text
+nmac--lex_fridman_podcast/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

nmac--lex_fridman_podcast/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d4d6b544c1ed09cdd97e7b68753d2d1bdb4ae6ac7dc49975d1dc5d1ca9f5874
+size 75509760