Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ train.json filter=lfs diff=lfs merge=lfs -text
 valid.json filter=lfs diff=lfs merge=lfs -text
 memray--stackexchange/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 memray--stackexchange/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+memray--stackexchange/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

memray--stackexchange/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:82c96ed3b5867e6eedd2ebc0cd92ba60c3f222d48dd98818336e053e1d835b7d
+size 1224224768