Update duckdb index files

.gitattributes

@@ -93,3 +93,4 @@ cqadupstack-wordpress-qrels/test/index.duckdb filter=lfs diff=lfs merge=lfs -tex
 cqadupstack-android-queries/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cqadupstack-unix-corpus/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cqadupstack-wordpress-corpus/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cqadupstack-text-corpus/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cqadupstack-text-corpus/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6fb71d43c7138e5075f2fb7cd81b3aef0f7165fc2c5be72d39010113d28d99c7
+size 470822912