Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 xmediasum/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+xmediasum/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

xmediasum/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:63cc099b92a32530415d00de8a8aec63c3537642e218a9daba176af52e9f97b1
+size 96743424