Update duckdb index files

.gitattributes

@@ -109,3 +109,4 @@ default/ifyoulikeblank/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/science/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/IAmA/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/socialskills/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/todayilearned/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/todayilearned/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4445d8c7c19d9114244fc5bdf15137d6231c8242c8ab154c8d8c64520178aa34
+size 1717055488