Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 yyu--stackexchange-attrprompt/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yyu--stackexchange-attrprompt/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+yyu--stackexchange-attrprompt/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

yyu--stackexchange-attrprompt/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4504f03771faf8393ddd79ba1e92e384b8fd2a796da19e9cd2c384b05a46e044
+size 1323008