Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* 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/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+UKPLab--insincere-questions/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

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

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:805f7db196adaedc1311619157f0e2c427f3545f3ccaa008b4969660411ecd1d
+size 1323008