Update duckdb index files

.gitattributes

@@ -779,3 +779,4 @@ dpr-rest-80%-maxlen-25/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dpr-rest-80%-maxlen-500/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dpr-rest-80%-maxlen-500/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dpr-rest-80%-maxlen-500/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+dpr-rest-90%-maxlen-50/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

dpr-rest-90%-maxlen-50/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:459f2a2d6d3b098765c43442664a788f87028060f9df3b17933fe7035b7e0134
+size 2371584