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
 EducativeCS2023--dummy_en_asr/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 EducativeCS2023--dummy_en_asr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+EducativeCS2023--dummy_en_asr/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

EducativeCS2023--dummy_en_asr/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d765f2e8a65fe8da1b4797f974582f7b806924f56218caeeda16e92e162ae10
+size 4730880