Update duckdb index files

.gitattributes

@@ -139,3 +139,4 @@ default/wordpress.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -
 default/webapps.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/superuser.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/cseducators.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/arduino.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/arduino.stackexchange.com/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:037811b68073e5701421ea4fd4111f17424a4bf456e952494c4f3dd6a0240724
+size 31469568