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
 lfqa_preprocessed_it.jsonl filter=lfs diff=lfs merge=lfs -text
+efederici--lfqa-preprocessed-it/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

efederici--lfqa-preprocessed-it/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d37e736f88b235d051e685f4523c083bada8005e4fb3452ea590e5af85d3cfec
+size 174075904