Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 train.json filter=lfs diff=lfs merge=lfs -text
 validation.json filter=lfs diff=lfs merge=lfs -text
 LLukas22--lfqa_preprocessed/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+LLukas22--lfqa_preprocessed/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

LLukas22--lfqa_preprocessed/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53ef2cdbbd74702ed70d2797133dd21a5ed8d83b58bebe29045dcf8d1c05c0d5
+size 2089037824