Update duckdb index files

.gitattributes

@@ -1243,3 +1243,4 @@ is/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi-Latn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+jv/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

jv/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a71464713bcfa6d2587e701c0f7cfc715bb6dd97f9e63fa505033d23d298dc51
+size 1836331008