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
 train.jsonl filter=lfs diff=lfs merge=lfs -text
+UKPLab--insincere-questions/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

UKPLab--insincere-questions/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d2d6644c48a361330f5aa5b08f0a667e3bf68d1e9f483a91039608288115433
+size 7090176