Update duckdb index files

.gitattributes

@@ -17,3 +17,4 @@ task4-phone-address/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 task5-full-dialogs/TESTOOV/index.duckdb filter=lfs diff=lfs merge=lfs -text
 task5-full-dialogs/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 task5-full-dialogs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+task5-full-dialogs/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

task5-full-dialogs/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a29be33012cc61bfb586cae4b87a24c85056f443e20706a6febf5c9ff2a65ad7
+size 1847296