Update duckdb index files

tuetschek--atis/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:49af79dff92e8a1dd1ae6f1b43cd75cbb4deced1d8e0f96abcc642dbf4da86d8
-size 1585152
+oid sha256:ae572945fc59983b1986f20efbc9214b3f55c6171a80103b673ad435d789efac
+size 1323008