Update duckdb index files

UKPLab--liar/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:1bf0761b63278020f12b61a3c85ae6b0903ccfc167b806d524aa1acd0d82419d
-size 2895872
+oid sha256:5c66992166829e48b2e8c6f545d1991d51023a2cf50e5fe31c1c16a0be1be31c
+size 3420160